tailspin vs stunt flying

tailspin and stunt flying both are nouns.

Word	Noun	Adjective	Verb	Adverb
tailspin	Yes	No	No	No
stunt flying	Yes	No	No	No

As nouns, stunt flying is a hypernym of tailspin; that is, stunt flying is a word with a broader meaning than tailspin:

Other hypernyms of tailspin include acrobatics, aerobatics, stunting.

tailspin (noun)	stunt flying (noun)
rapid descent of an aircraft in a steep spiral	the performance of stunts while in flight in an aircraft
loss of emotional control often resulting in emotional collapse