What part of speech is laughter?

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

* Noun: This is the most common use, referring to the act of laughing itself.

* Example: "Her laughter filled the room."

* Verb: It can also be used as a verb, meaning "to laugh."

* Example: "The children laughed at the silly jokes."

* Adjective: While less common, it can be used as an adjective to describe something related to laughter.

* Example: "The movie had a laughter-filled ending."

So, the answer depends on the context!