land up vs close up

land up and close up both are verbs.

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

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

Other hypernyms of land up include block, impede, jam, obstruct, obturate, occlude.

land up (verb)	close up (verb)
finally be or do something	refuse to talk or stop talking; fall silent
block with earth, as after a landslide	block passage through
	unite or bring into contact or bring together the edges of
	cease to operate or cause to cease operating

land up (adverb)	close up (adverb)
	very close