haw vs emit

haw is a noun but emit is not a noun.

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

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

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

haw (noun)	emit (noun)
the nictitating membrane of a horse
a spring-flowering shrub or small tree of the genus Crataegus

haw (verb)	emit (verb)
utter `haw'	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.