onward motion vs career

onward motion and career both are nouns.

Word	Noun	Adjective	Verb	Adverb
onward motion	Yes	No	No	No
career	Yes	No	Yes	No

As nouns, career is a hyponym of onward motion; that is, career is a word with a more specific, narrower meaning than onward motion:

Other hyponyms of onward motion include push, life history, march, clear sailing, easy going, plain sailing, leapfrog.

onward motion (noun)	career (noun)
the act of moving forward (as toward a goal)	the particular occupation for which you are trained
	the general progression of your working or professional life

onward motion (verb)	career (verb)
	move headlong at high speed