stabilizer vs tail fin

stabilizer and tail fin both are nouns.

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

As nouns, tail fin is a hyponym of stabilizer; that is, tail fin is a word with a more specific, narrower meaning than stabilizer:

stabilizer: airfoil consisting of a device for stabilizing an aircraft
tail fin: a stabilizer that is part of the vertical tail structure of an airplane

Other hyponyms of stabilizer include horizontal tail, tailfin, vertical fin, vertical stabiliser, vertical stabilizer.

stabilizer (noun)	tail fin (noun)
a device for making something stable	the tail of fishes and some other aquatic vertebrates
airfoil consisting of a device for stabilizing an aircraft	a stabilizer that is part of the vertical tail structure of an airplane
a chemical that is added to a solution or mixture or suspension to maintain it in a stable or unchanging state	one of a pair of decorations projecting above the rear fenders of an automobile