tailfin vs automobile

tailfin and automobile both are nouns.

Word	Noun	Adjective	Verb	Adverb
tailfin	Yes	No	No	No
automobile	Yes	No	Yes	No

tailfin (noun)	automobile (noun)
a stabilizer that is part of the vertical tail structure of an airplane	a motor vehicle with four wheels; usually propelled by an internal combustion engine
one of a pair of decorations projecting above the rear fenders of an automobile

tailfin (verb)	automobile (verb)
	travel in an automobile