catch up vs learn

catch up and learn both are verbs.

Word	Noun	Adjective	Verb	Adverb
catch up	No	No	Yes	No
learn	No	No	Yes	No

As verbs, learn is a hypernym of catch up; that is, learn is a word with a broader meaning than catch up:

Other hypernyms of catch up include acquire, larn.

catch up (verb)	learn (verb)
learn belatedly; find out about something after it happened	gain knowledge or skills
reach the point where one should be after a delay	get to know or become aware of, usually accidentally
	be a student of a certain subject
	commit to memory; learn by heart
	impart skills or knowledge to
	find out, learn, or determine with certainty, usually by making an inquiry or other effort