tickle vs stimulate

tickle is a noun but stimulate is not a noun.

Word	Noun	Adjective	Verb	Adverb
tickle	Yes	No	Yes	No
stimulate	No	No	Yes	No

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

Other hypernyms of tickle include excite, shake, shake up, stir.

tickle (noun)	stimulate (noun)
the act of tickling
a cutaneous sensation often resulting from light stroking

tickle (verb)	stimulate (verb)
touch or stroke lightly	cause to be alert and energetic
feel sudden intense sensation or emotion	act as a stimulant
touch (a body part) lightly so as to excite the surface nerves and cause uneasiness, laughter, or spasmodic movements	provide the needed stimulus for
	cause to do; cause to act in a specified manner
	cause to occur rapidly
	stir the feelings, emotions, or peace of
	stir feelings in