machine vs bumper

machine and bumper both are nouns.

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

machine (noun)	bumper (noun)
any mechanical or electrical device that transmits or modifies energy to perform or assist in the performance of human tasks	a mechanical device consisting of bars at either end of a vehicle to absorb shock and prevent serious damage
a motor vehicle with four wheels; usually propelled by an internal combustion engine	a glass filled to the brim (especially as a toast)
a device for overcoming resistance at one point by applying force at some other point
a group that controls the activities of a political party
an intricate organization that accomplishes its goals efficiently
an efficient person

machine (verb)	bumper (verb)
make by machinery
turn, shape, mold, or otherwise finish by machinery