brainwave vs bioelectricity

brainwave and bioelectricity both are nouns.

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

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

brainwave: (neurophysiology) rapid fluctuations of voltage between parts of the cerebral cortex that are detectable with an electroencephalograph
bioelectricity: electric phenomena in animals or plants

brainwave (noun)	bioelectricity (noun)
the clear (and often sudden) understanding of a complex situation	electric phenomena in animals or plants
(neurophysiology) rapid fluctuations of voltage between parts of the cerebral cortex that are detectable with an electroencephalograph