scintillate vs give off

scintillate and give off both are verbs.

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

As verbs, give off is a hypernym of scintillate; that is, give off is a word with a broader meaning than scintillate:

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

Other hypernyms of scintillate include emit, give out.

scintillate (verb)	give off (verb)
be lively or brilliant or exhibit virtuosity	have as a by-product
fluoresce momentarily when struck by a charged particle or high-energy photon	give off, send forth, or discharge; as of light, heat, or radiation, vapor, etc.
emit or reflect light in a flickering manner
give off
reflect brightly