emit vs steam

emit is not a noun while steam is a noun.

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

As verbs, steam is a hyponym of emit; that is, steam is a word with a more specific, narrower meaning than emit:

emit: give off, send forth, or discharge; as of light, heat, or radiation, vapor, etc.
steam: emit steam

Other hyponyms of emit include effuse, reflect, shine, spark, sparkle, radiate, scintillate, fume, smoke, reek, shoot, ray.

emit (noun)	steam (noun)
	water at boiling temperature diffused in the atmosphere

emit (verb)	steam (verb)
expel (gases or odors)	cook something by letting steam pass over it
express audibly; utter sounds (not necessarily words)	clean by means of steaming
give off, send forth, or discharge; as of light, heat, or radiation, vapor, etc.	get very agitated or angry
	rise as vapor
	travel by means of steam power
	emit steam