machine vs car horn

machine and car horn both are nouns.

Word	Noun	Adjective	Verb	Adverb
machine	Yes	No	Yes	No
car horn	Yes	No	No	No

machine (noun)	car horn (noun)
any mechanical or electrical device that transmits or modifies energy to perform or assist in the performance of human tasks	a device on an automobile for making a warning noise
a motor vehicle with four wheels; usually propelled by an internal combustion engine
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)	car horn (verb)
make by machinery
turn, shape, mold, or otherwise finish by machinery