impulsive vs impel

impulsive is an adjective but impel is not an adjective.

Word	Noun	Adjective	Verb	Adverb
impulsive	No	Yes	No	No
impel	No	No	Yes	No

impulsive (adjective)	impel (adjective)
determined by chance or impulse or whim rather than by necessity or reason
having the power of driving or impelling
characterized by undue haste and lack of thought or deliberation
proceeding from natural feeling or impulse without external stimulus
without forethought

impulsive (verb)	impel (verb)
	cause to move forward with force
	urge or force (a person) to an action; constrain or motivate