baa vs emit

baa is a noun but emit is not a noun.

Word	Noun	Adjective	Verb	Adverb
baa	Yes	No	Yes	No
emit	No	No	Yes	No

As verbs, emit is a hypernym of baa; that is, emit is a word with a broader meaning than baa:

Other hypernyms of baa include let loose, let out, utter.

baa (noun)	emit (noun)
the cry made by sheep

baa (verb)	emit (verb)
cry plaintively	expel (gases or odors)
	express audibly; utter sounds (not necessarily words)
	give off, send forth, or discharge; as of light, heat, or radiation, vapor, etc.