truck vs bumper

truck and bumper both are nouns.

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

truck (noun)	bumper (noun)
an automotive vehicle suitable for hauling	a mechanical device consisting of bars at either end of a vehicle to absorb shock and prevent serious damage
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	a glass filled to the brim (especially as a toast)

truck (verb)	bumper (verb)
convey (goods etc.) by truck