"Car" is a noun because "car" is a thing.
Examples:
A car is used to travel - in that sentence, car is the subject and a noun.
I will go by car - in that sentence, car is the object of the preposition and also noun.
Makes is a plural noun (different makes of cars) and a verb (third person singular conjugation of make).
part of speech
The part of speech for this particular word is a noun.
Makes is a plural noun (different makes of cars) and a verb (third person singular conjugation of make).
The part of speech for "answer" is a noun.
adverb
what part of speech is beneath
The part of speech for "explicit" is an adjective.
The part of speech for "twirl" is a verb.
The part of speech for "unfamiliar" is an adjective.
The part of speech of "came" is a verb.
The part of speech for "lecturer" is a noun.