truck vs tailgate

truck and tailgate both are nouns.

Word	Noun	Adjective	Verb	Adverb
truck	Yes	No	Yes	No
tailgate	Yes	No	Yes	No

truck (noun)	tailgate (noun)
an automotive vehicle suitable for hauling	a gate at the rear of a vehicle; can be lowered for loading
a handcart that has a frame with two low wheels and a ledge at the bottom and handles at the top; used to move crates or other heavy objects

truck (verb)	tailgate (verb)
convey (goods etc.) by truck	follow at a dangerously close distance