yearling vs bangtail

yearling and bangtail both are nouns.

Word	Noun	Adjective	Verb	Adverb
yearling	Yes	No	No	No
bangtail	Yes	No	No	No

As nouns, bangtail is a hypernym of yearling; that is, bangtail is a word with a broader meaning than yearling:

yearling: a racehorse considered one year old until the second Jan. 1 following its birth
bangtail: a horse bred for racing

Other hypernyms of yearling include race horse, racehorse.

yearling (noun)	bangtail (noun)
an animal in its second year	a horse bred for racing
a racehorse considered one year old until the second Jan. 1 following its birth
a young child who is just beginning to walk