stimulate vs obligate

stimulate is not an adjective while obligate is an adjective.

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

As verbs, obligate is a hyponym of stimulate; that is, obligate is a word with a more specific, narrower meaning than stimulate:

Other hyponyms of stimulate include decide, persuade, bring, solicit, encourage, let, lead, inspire, instigate, prompt, suborn, compel, oblige.

stimulate (adjective)	obligate (adjective)
	restricted to a particular condition of life

stimulate (verb)	obligate (verb)
cause to be alert and energetic	bind by an obligation; cause to be indebted
act as a stimulant	commit in order to fulfill an obligation
provide the needed stimulus for	force somebody to do something
cause to do; cause to act in a specified manner
cause to occur rapidly
stir the feelings, emotions, or peace of
stir feelings in