What part of speech is fault?

"Fault" can be a few different parts of speech depending on its use in a sentence:

* Noun: This is the most common use. It refers to a flaw, mistake, or responsibility for something wrong.

* Example: "It was his fault that the project failed."

* Verb: This is less common but means to find someone responsible or to blame someone.

* Example: "The jury faulted the driver for the accident."

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