stimulate vs touch on

stimulate and touch on both are verbs.

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

As verbs, touch on is a hypernym of stimulate; that is, touch on is a word with a broader meaning than stimulate:

Other hypernyms of stimulate include affect, bear on, bear upon, impact, touch.

stimulate (verb)	touch on (verb)
cause to be alert and energetic	restore by replacing a part or putting together what is torn or broken
act as a stimulant	have an effect upon
provide the needed stimulus for	refer to or discuss briefly
cause to do; cause to act in a specified manner	be relevant to
cause to occur rapidly
stir the feelings, emotions, or peace of
stir feelings in