rising vs liftoff

rising and liftoff both are nouns.

Word	Noun	Adjective	Verb	Adverb
rising	Yes	Yes	No	No
liftoff	Yes	No	No	No

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

rising (noun)	liftoff (noun)
organized opposition to authority; a conflict in which one faction tries to wrest control from another	the initial ascent of a rocket from its launching pad
a movement upward; rise above the ground

rising (adjective)	liftoff (adjective)
advancing or becoming higher or greater in degree or value or status
sloping upward
coming to maturity
newly come into prominence