When used as four plus five it is a conjunction like and.
Plus is commonly used as a preposition because it shows the relationship between the noun that precedes it and the noun that follows it, as in
four plus five equals nine.
adverb
what part of speech is beneath
i want to know what part of speech is camping
The part of speech is a adjective
Oppose is a verb.
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
No, it is not a part of CTC because it is a one time money paid and not a recurring sum.
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.