The word proof is both a noun and a verb.
Proof (as in evidence, or as in a final draft before printing of a photo or book) is a noun.
The corresponding verb is to prove.
Proof may be a verb, proof, meaning 'to test, to examine for flaws.'
In baking, it means 'to cause dough to rise.'
In printing, it means 'to make a trial impression' or 'to proofread.'
Examples:
Noun: For some people, if it's in a blog, that's proof that it's true.
Verb: More people should proof their emails and texts before they hit send.
part of speech
Adjective
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The part of speech for oscillate is verb.
An adjective is a part of speech.
The part of speech for this particular word is a noun.
part of speech
The part of speech for "answer" is a noun.
what part of speech is beneath
adverb
The word "allegation" is a noun. It refers to a claim or assertion that someone has done something wrong or illegal without providing proof.
The part of speech for "explicit" is an adjective.
The part of speech for "lecturer" is a noun.
The part of speech for "rapid" is an adjective.
The part of speech of "came" is a verb.
The part of speech for "breezy" is an adjective.
The part of speech for "buried" is a verb.