impel vs launch

impel is not a noun while launch is a noun.

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

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

Other hyponyms of impel include flip, rocket, carry, kick, pole, punt, hit, throw, drive, catapult, project, send off, loft.

impel (noun)	launch (noun)
	the act of propelling with force
	a motorboat with an open deck or a half deck

impel (verb)	launch (verb)
cause to move forward with force	begin with vigor
urge or force (a person) to an action; constrain or motivate	propel with force
	launch for the first time; launch on a maiden voyage
	get going; give impetus to
	smoothen the surface of
	set up or found