What part of speech is emission?

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

* Noun: This is the most common usage. It refers to the act of emitting something, or the thing that is emitted.

* Example: "The car's exhaust emissions are harmful to the environment."

* Verb: It can be used as a verb meaning "to emit" or "to release."

* Example: "The volcano emitted a plume of smoke."

* Adjective: Less common, but it can sometimes be used as an adjective meaning "emitted" or "related to emitting."

* Example: "The emission spectrum of the star revealed its composition."

So, the part of speech for "emission" depends on its context in the sentence.