latch on vs take up

latch on and take up both are verbs.

Word	Noun	Adjective	Verb	Adverb
latch on	No	No	Yes	No
take up	No	No	Yes	No

As verbs, latch on and take up are synonyms defined as:

Other synonyms of latch on include fasten on, hook on, seize on.

latch on (verb)	take up (verb)
understand, usually after some initial difficulty	pursue or resume
adopt	return to a previous location or condition
take hold of or attach to	adopt
	take up as if with a sponge
	take out or up with or as if with a scoop
	accept
	take in, also metaphorically
	take up a liquid or a gas either by adsorption or by absorption
	occupy or take on
	take up and practice as one's own
	begin work or acting in a certain capacity, office or job
	turn one's interest to
	take up time or space