propel vs send off

propel and send off both are verbs.

Word	Noun	Adjective	Verb	Adverb
propel	No	No	Yes	No
send off	No	No	Yes	No

As verbs, send off is a hyponym of propel; that is, send off is a word with a more specific, narrower meaning than propel:

Other hyponyms of propel include flip, rocket, carry, kick, pole, punt, hit, throw, drive, launch, catapult, project, loft.

propel (verb)	send off (verb)
cause to move forward with force	transfer
give an incentive for action	throw, send, or cast forward
	send away towards a designated goal