tail fin vs vertical tail

tail fin and vertical tail both are nouns.

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

tail fin (noun)	vertical tail (noun)
the tail of fishes and some other aquatic vertebrates	the vertical airfoil in the tail assembly of an aircraft
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