enter vs take up

enter and take up both are verbs.

Word	Noun	Adjective	Verb	Adverb
enter	No	No	Yes	No
take up	No	No	Yes	No

As verbs, take up is a hyponym of enter; that is, take up is a word with a more specific, narrower meaning than enter:

enter (verb)	take up (verb)
set out on (an enterprise or subject of study)	pursue or resume
make a record of; set down in permanent form	return to a previous location or condition
become a participant; be involved in	adopt
put or introduce into something	take up as if with a sponge
come on stage	take out or up with or as if with a scoop
to come or go into	accept
take on duties or office	take in, also metaphorically
register formally as a participant or member	take up a liquid or a gas either by adsorption or by absorption
be or play a part of or in	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