adjourn vs close up

adjourn and close up both are verbs.

Word	Noun	Adjective	Verb	Adverb
adjourn	No	No	Yes	No
close up	No	No	Yes	Yes

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

Other hypernyms of adjourn include close, close down, fold, shut down.

adjourn (verb)	close up (verb)
close at the end of a session	refuse to talk or stop talking; fall silent
break from a meeting or gathering	block passage through
	unite or bring into contact or bring together the edges of
	cease to operate or cause to cease operating

adjourn (adverb)	close up (adverb)
	very close