give off vs effuse

give off and effuse both are verbs.

Word	Noun	Adjective	Verb	Adverb
give off	No	No	Yes	No
effuse	No	No	Yes	No

As verbs, effuse is a hyponym of give off; that is, effuse is a word with a more specific, narrower meaning than give off:

give off: give off, send forth, or discharge; as of light, heat, or radiation, vapor, etc.
effuse: give out or emit (also metaphorically)

Other hyponyms of give off include reflect, shine, spark, sparkle, radiate, scintillate, fume, smoke, reek, shoot, ray, steam.

give off (verb)	effuse (verb)
have as a by-product	give out or emit (also metaphorically)
give off, send forth, or discharge; as of light, heat, or radiation, vapor, etc.	flow or spill forth
	pour out liberally