Uses is a noun (plural form of use) and a verb (third person singular conjugation of use).
a speech that someone uses
The word uses is a plural noun. It can also be the present tense of the verb use.
Expedition is a noun in all uses.
For the most part, it's an adverb. But it does have other uses. See the Dictionary.com link below.
part of speech
The part of speech for this particular word is a noun.
The part of speech for "answer" is a noun.
adverb
what part of speech is beneath
For the most part, it's an adverb. But it does have other uses. See the Dictionary.com link below.
. What is one way that Henry's speech uses figurative language?-
The part of speech for "explicit" is an adjective.