subtilise vs heighten

subtilise and heighten both are verbs.

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

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

Other hypernyms of subtilise include sharpen.

subtilise (verb)	heighten (verb)
make (senses) more keen	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