diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6af2c6f..485fcea 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -26,7 +26,7 @@
 - update vendor (UTF-8)
 
 ### 6.4.1 (2021-04-07)
-- use Github Actions
+- use GitHub Actions
 - use optimized phpdocs for phpstan
 - use phpdocs (generics) for collections
 
diff --git a/README.md b/README.md
index ae5fe7e..fed7921 100644
--- a/README.md
+++ b/README.md
@@ -625,7 +625,7 @@ EXAMPLE: <code>
 </code>
 
 **Parameters:**
-- `array<array-key, (int|string)> $options [optional] <p>An array of bcrypt hasing options.</p>`
+- `array<array-key, (int|string)> $options [optional] <p>An array of bcrypt hashing options.</p>`
 
 **Return:**
 - `static`
@@ -3995,7 +3995,7 @@ From the project directory, tests can be ran using `phpunit`
 
 ## Support
 
-For support and donations please visit [Github](https://github.com/voku/Stringy/) | [Issues](https://github.com/voku/Stringy/issues) | [PayPal](https://paypal.me/moelleken) | [Patreon](https://www.patreon.com/voku).
+For support and donations please visit [GitHub](https://github.com/voku/Stringy/) | [Issues](https://github.com/voku/Stringy/issues) | [PayPal](https://paypal.me/moelleken) | [Patreon](https://www.patreon.com/voku).
 
 For status updates and release announcements please visit [Releases](https://github.com/voku/Stringy/releases) | [Twitter](https://twitter.com/suckup_de) | [Patreon](https://www.patreon.com/voku/posts).
 
@@ -4003,11 +4003,11 @@ For professional support please contact [me](https://about.me/voku).
 
 ## Thanks
 
-- Thanks to [GitHub](https://github.com) (Microsoft) for hosting the code and a good infrastructure including Issues-Managment, etc.
+- Thanks to [GitHub](https://github.com) (Microsoft) for hosting the code and a good infrastructure including Issues-Management, etc.
 - Thanks to [IntelliJ](https://www.jetbrains.com) as they make the best IDEs for PHP and they gave me an open source license for PhpStorm!
-- Thanks to [Travis CI](https://travis-ci.com/) for being the most awesome, easiest continous integration tool out there!
-- Thanks to [StyleCI](https://styleci.io/) for the simple but powerfull code style check.
-- Thanks to [PHPStan](https://github.com/phpstan/phpstan) && [Psalm](https://github.com/vimeo/psalm) for relly great Static analysis tools and for discover bugs in the code!
+- Thanks to [Travis CI](https://travis-ci.com/) for being the most awesome, easiest continuous integration tool out there!
+- Thanks to [StyleCI](https://styleci.io/) for the simple but powerful code style check.
+- Thanks to [PHPStan](https://github.com/phpstan/phpstan) && [Psalm](https://github.com/vimeo/psalm) for really great Static analysis tools and for discover bugs in the code!
 
 ## License
 
diff --git a/build/docs/base.md b/build/docs/base.md
index f255a4d..cfd4636 100644
--- a/build/docs/base.md
+++ b/build/docs/base.md
@@ -205,7 +205,7 @@ From the project directory, tests can be ran using `phpunit`
 
 ## Support
 
-For support and donations please visit [Github](https://github.com/voku/Stringy/) | [Issues](https://github.com/voku/Stringy/issues) | [PayPal](https://paypal.me/moelleken) | [Patreon](https://www.patreon.com/voku).
+For support and donations please visit [GitHub](https://github.com/voku/Stringy/) | [Issues](https://github.com/voku/Stringy/issues) | [PayPal](https://paypal.me/moelleken) | [Patreon](https://www.patreon.com/voku).
 
 For status updates and release announcements please visit [Releases](https://github.com/voku/Stringy/releases) | [Twitter](https://twitter.com/suckup_de) | [Patreon](https://www.patreon.com/voku/posts).
 
@@ -213,11 +213,11 @@ For professional support please contact [me](https://about.me/voku).
 
 ## Thanks
 
-- Thanks to [GitHub](https://github.com) (Microsoft) for hosting the code and a good infrastructure including Issues-Managment, etc.
+- Thanks to [GitHub](https://github.com) (Microsoft) for hosting the code and a good infrastructure including Issues-Management, etc.
 - Thanks to [IntelliJ](https://www.jetbrains.com) as they make the best IDEs for PHP and they gave me an open source license for PhpStorm!
-- Thanks to [Travis CI](https://travis-ci.com/) for being the most awesome, easiest continous integration tool out there!
-- Thanks to [StyleCI](https://styleci.io/) for the simple but powerfull code style check.
-- Thanks to [PHPStan](https://github.com/phpstan/phpstan) && [Psalm](https://github.com/vimeo/psalm) for relly great Static analysis tools and for discover bugs in the code!
+- Thanks to [Travis CI](https://travis-ci.com/) for being the most awesome, easiest continuous integration tool out there!
+- Thanks to [StyleCI](https://styleci.io/) for the simple but powerful code style check.
+- Thanks to [PHPStan](https://github.com/phpstan/phpstan) && [Psalm](https://github.com/vimeo/psalm) for really great Static analysis tools and for discover bugs in the code!
 
 ## License
 
diff --git a/phpstan.neon b/phpstan.neon
index 453010b..a7a1e36 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -4,7 +4,7 @@ parameters:
         - %currentWorkingDirectory%/src/
     reportUnmatchedIgnoredErrors: false
     ignoreErrors:
-        # false-postive?
+        # false-positive?
         - '#Arrayy\\Collection\\AbstractCollection<int, Stringy\\Stringy>#'
         # not supported
         - '#bound type \(int\|string\) is not supported#'
diff --git a/src/Stringy.php b/src/Stringy.php
index df8eb5a..a8abb19 100644
--- a/src/Stringy.php
+++ b/src/Stringy.php
@@ -436,7 +436,7 @@ public function base64Encode(): self
      * EXAMPLE: <code>
      * </code>
      *
-     * @param array<array-key, int|string> $options [optional] <p>An array of bcrypt hasing options.</p>
+     * @param array<array-key, int|string> $options [optional] <p>An array of bcrypt hashing options.</p>
      *
      * @psalm-mutation-free
      *
diff --git a/tests/StringyStrictTest.php b/tests/StringyStrictTest.php
index 1294f29..9308e2e 100644
--- a/tests/StringyStrictTest.php
+++ b/tests/StringyStrictTest.php
@@ -1876,20 +1876,20 @@ public function testAddRandomString()
 
     public function testAddUniqueIdentifier()
     {
-        $uniquIDs = [];
+        $uniqueIDs = [];
         for ($i = 0; $i <= 100; ++$i) {
             $stringy = S::create('');
-            $uniquIDs[] = (string) $stringy->appendUniqueIdentifier();
+            $uniqueIDs[] = (string) $stringy->appendUniqueIdentifier();
         }
 
         // detect duplicate values in the array
-        foreach (\array_count_values($uniquIDs) as $uniquID => $count) {
+        foreach (\array_count_values($uniqueIDs) as $uniqueID => $count) {
             static::assertSame(1, $count);
         }
 
         // check the string length
-        foreach ($uniquIDs as $uniquID) {
-            static::assertSame(32, \strlen($uniquID));
+        foreach ($uniqueIDs as $uniqueID) {
+            static::assertSame(32, \strlen($uniqueID));
         }
     }
 
@@ -4063,8 +4063,8 @@ public function titleizeForHumansProvider()
                 'Notes and Observations Regarding Apple’s Announcements From ‘The Beat Goes On’ Special Event',
             ],
             [
-                'Read markdown_rules.txt to find out how _underscores around words_ will be interpretted',
-                'Read markdown_rules.txt to Find Out How _Underscores Around Words_ Will Be Interpretted',
+                'Read markdown_rules.txt to find out how _underscores around words_ will be interpreted',
+                'Read markdown_rules.txt to Find Out How _Underscores Around Words_ Will Be Interpreted',
             ],
             [
                 "Q&A with Steve Jobs: 'That's what happens in technology'",
@@ -4432,13 +4432,13 @@ public function testUtf8ify()
             'κόσμε'    => ['κόσμε' => 'κόσμε'],
             '中'        => ['中' => '中'],
             '«foobar»' => ['«foobar»' => '«foobar»'],
-            // Valid UTF-8 + Invalied Chars
+            // Valid UTF-8 + Invalid Chars
             "κόσμε\xa0\xa1-öäü" => ['κόσμε-öäü' => 'κόσμε-öäü'],
             // Valid ASCII
             'a' => ['a' => 'a'],
             // Valid emoji (non-UTF-8)
             '😃' => ['😃' => '😃'],
-            // Valid ASCII + Invalied Chars
+            // Valid ASCII + Invalid Chars
             "a\xa0\xa1-öäü" => ['a-öäü' => 'a-öäü'],
             // Valid 2 Octet Sequence
             "\xc3\xb1" => ['ñ' => 'ñ'],