progression vs leapfrog

progression and leapfrog both are nouns.

Word	Noun	Adjective	Verb	Adverb
progression	Yes	No	No	No
leapfrog	Yes	No	Yes	No

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

progression: the act of moving forward (as toward a goal)
leapfrog: advancing as if in the child's game, by leaping over obstacles or competitors

Other hyponyms of progression include push, career, life history, march, clear sailing, easy going, plain sailing.

progression (noun)	leapfrog (noun)
the act of moving forward (as toward a goal)	a game in which one child bends down and another leaps over
a movement forward	advancing as if in the child's game, by leaping over obstacles or competitors
a series with a definite pattern of advance

progression (verb)	leapfrog (verb)
	progress by large jumps instead of small increments
	to vault