What part of speech is full?

"Full" can be a few different parts of speech depending on how it's used in a sentence:

* Adjective: Describing a noun. Example: "The glass is full."

* Adverb: Modifying a verb, adjective, or another adverb. Example: "The room was full of people."

* Noun: Can be used to describe a state or quantity. Example: "The cup was full to the brim."

It's important to look at the context of the sentence to determine the specific part of speech.