touch on vs excite

touch on and excite both are verbs.

Word	Noun	Adjective	Verb	Adverb
touch on	No	No	Yes	No
excite	No	No	Yes	No

As verbs, excite is a hyponym of touch on; that is, excite is a word with a more specific, narrower meaning than touch on:

touch on (verb)	excite (verb)
restore by replacing a part or putting together what is torn or broken	act as a stimulant
have an effect upon	produce a magnetic field in
refer to or discuss briefly	raise to a higher energy level
be relevant to	stir the feelings, emotions, or peace of
	to evoke sexual feelings
	arouse or elicit a feeling
	cause to be agitated, excited, or roused
	stir feelings in