brainwave vs savvy

brainwave and savvy both are nouns.

Word	Noun	Adjective	Verb	Adverb
brainwave	Yes	No	No	No
savvy	Yes	No	Yes	No

As nouns, savvy is a hypernym of brainwave; that is, savvy is a word with a broader meaning than brainwave:

brainwave: the clear (and often sudden) understanding of a complex situation
savvy: the cognitive condition of someone who understands

Other hypernyms of brainwave include apprehension, discernment, understanding.

brainwave (noun)	savvy (noun)
the clear (and often sudden) understanding of a complex situation	the cognitive condition of someone who understands
(neurophysiology) rapid fluctuations of voltage between parts of the cerebral cortex that are detectable with an electroencephalograph

brainwave (verb)	savvy (verb)
	get the meaning of something