emit vs let loose

emit and let loose both are verbs.

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

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

emit and let loose: express audibly; utter sounds (not necessarily words)

Other synonyms of emit include let out, utter.

emit (verb)	let loose (verb)
expel (gases or odors)	express audibly; utter sounds (not necessarily words)
express audibly; utter sounds (not necessarily words)	turn loose or free from restraint
give off, send forth, or discharge; as of light, heat, or radiation, vapor, etc.