set out vs lift off

set out and lift off both are verbs.

Word	Noun	Adjective	Verb	Adverb
set out	No	No	Yes	No
lift off	No	No	Yes	No

As verbs, lift off is a hyponym of set out; that is, lift off is a word with a more specific, narrower meaning than set out:

Other hyponyms of set out include take off, roar off, blaze, blaze out, sally forth, sally out.

set out (verb)	lift off (verb)
take the first step or steps in carrying out an action	depart from the ground
lay out orderly or logically in a line or as if in a line
depart for someplace