bale vs hay bale

bale and hay bale both are nouns.

Word	Noun	Adjective	Verb	Adverb
bale	Yes	No	Yes	No
hay bale	Yes	No	No	No

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

bale (noun)	hay bale (noun)
a large bundle bound for storage or transport	a bale of hay

bale (verb)	hay bale (verb)
make into a bale