vertical fin vs vertical stabilizer

vertical fin and vertical stabilizer both are nouns.

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

As nouns, vertical fin and vertical stabilizer are synonyms defined as:

vertical fin and vertical stabilizer: a stabilizer that is part of the vertical tail structure of an airplane

Other synonyms of vertical fin include tail fin, tailfin, vertical stabiliser.

vertical fin (noun)	vertical stabilizer (noun)
a stabilizer that is part of the vertical tail structure of an airplane	a stabilizer that is part of the vertical tail structure of an airplane