Yes, punctuation is definitely part of grammar. Punctuation marks are used to indicate meaning in a sentence. They help separate ideas, parts of a sentence, and they help make the sentence complete. Without punctuation, readers cannot always know where one word stops and another one begins. Punctuation is also important for indicating intonation and pauses, as well as setting off other important elements in a sentence. In short, punctuation is an essential part of grammar and should never be ignored.
