acrobatics vs tailspin

acrobatics and tailspin both are nouns.

Word	Noun	Adjective	Verb	Adverb
acrobatics	Yes	No	No	No
tailspin	Yes	No	No	No

As nouns, tailspin is a hyponym of acrobatics; that is, tailspin is a word with a more specific, narrower meaning than acrobatics:

Other hyponyms of acrobatics include spin.

acrobatics (noun)	tailspin (noun)
the gymnastic moves of an acrobat	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