emit vs let out

emit and let out both are verbs.

Word	Noun	Adjective	Verb	Adverb
emit	No	No	Yes	No
let out	No	No	Yes	No

As verbs, emit and let out are synonyms defined as:

Other synonyms of emit include let loose, utter.

emit (verb)	let out (verb)
expel (gases or odors)	make (clothes) larger
express audibly; utter sounds (not necessarily words)	make known to the public information that was previously known only to a few people or that was meant to be kept a secret
give off, send forth, or discharge; as of light, heat, or radiation, vapor, etc.	express audibly; utter sounds (not necessarily words)
	bring out of a specific state