What part of speech is the word critical?

The word "critical" can be several parts of speech depending on how it's used in a sentence:

* Adjective: Describing something as essential, crucial, or important. Example: "This is a critical moment in history."

* Adverb: Meaning "in a critical manner" or "with careful judgment." Example: "He analyzed the situation critically."

* Noun: Referring to a critical analysis or a review. Example: "The film received positive criticals."

To figure out which part of speech "critical" is, you need to look at its function in the sentence.