tail fin vs automobile

tail fin and automobile both are nouns.

Word	Noun	Adjective	Verb	Adverb
tail fin	Yes	No	No	No
automobile	Yes	No	Yes	No

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

tail fin (verb)	automobile (verb)
	travel in an automobile