clack vs emit

clack is a noun but emit is not a noun.

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

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

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

clack (noun)	emit (noun)
a simple valve with a hinge on one side; allows fluid to flow in only one direction
a sharp abrupt noise as if two objects hit together; may be repeated

clack (verb)	emit (verb)
speak (about unimportant matters) rapidly and incessantly	expel (gases or odors)
make a clucking sounds, characteristic of hens	express audibly; utter sounds (not necessarily words)
make a rattling sound	give off, send forth, or discharge; as of light, heat, or radiation, vapor, etc.