propulsion vs launch

propulsion and launch both are nouns.

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

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

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

propulsion (verb)	launch (verb)
	begin with vigor
	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