What part of speech is collapse?

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

* Verb: This is the most common use. It means to fall down suddenly, break down, or fail.

* Example: "The building collapsed after the earthquake."

* Noun: It can refer to the act of collapsing or the state of being collapsed.

* Example: "The collapse of the bridge was a major tragedy."

* Adjective: It can describe something that is weakened or likely to fall down.

* Example: "The bridge is in a collapse condition."

So, you'll need to look at the sentence it's used in to determine which part of speech it is.