nonstarter vs bangtail

nonstarter and bangtail both are nouns.

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

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

nonstarter: a horse that fails to run in a race for which it has been entered
bangtail: a horse bred for racing

Other hypernyms of nonstarter include race horse, racehorse.

nonstarter (noun)	bangtail (noun)
a horse that fails to run in a race for which it has been entered	a horse bred for racing
a person with a record of failing; someone who loses consistently