potentiate vs heighten

potentiate and heighten both are verbs.

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

As verbs, heighten is a hypernym of potentiate; that is, heighten is a word with a broader meaning than potentiate:

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

Other hypernyms of potentiate include enhance, raise.

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