What part of speech is crude?

"Crude" can be several parts of speech depending on how it's used:

* Adjective: This is the most common usage, describing something rough, unfinished, or unrefined. Example: "He used crude methods to build his shelter."

* Noun: It can refer to unprocessed oil or other raw materials. Example: "The price of crude oil is rising."

* Verb: This is less common but can mean to make something rough or unrefined. Example: "They crudely carved a message into the tree."

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