launch vs propel

launch is a noun but propel is not a noun.

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

As verbs, propel is a hypernym of launch; that is, propel is a word with a broader meaning than launch:

Other hypernyms of launch include impel.

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

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