Punctuation marks are symbols used in written language to separate sentences and clauses, clarify meaning, and indicate pauses or emphasis. Understanding their function is crucial for clear communication. A hashtag (#) is primarily used on social media platforms to categorize content and facilitate searches by marking keywords or topics. While it is a symbol, it does not serve the grammatical function of separating or clarifying sentence structure in traditional writing.
In contrast, a hyphen (-) is a punctuation mark used to join words or parts of words. A comma (,) is used to separate clauses, items in a list, and introduce pauses. An exclamation mark (!) is used to indicate strong feelings or emphasis. All three are standard punctuation marks with specific grammatical roles, unlike the hashtag.