heighten vs potentiate

heighten and potentiate both are verbs.

Word	Noun	Adjective	Verb	Adverb
heighten	No	No	Yes	No
potentiate	No	No	Yes	No

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

heighten: increase the level of
potentiate: increase the effect of or act synergistically with (a drug or a physiological or biochemical phenomenon)

Other hyponyms of heighten include overclock.

heighten (verb)	potentiate (verb)
increase the level of	increase the effect of or act synergistically with (a drug or a physiological or biochemical phenomenon)
become more extreme
make more extreme; raise in quantity, degree, or intensity
make more intense, stronger, or more marked
make (one's senses) more acute
increase the height of