tie up vs close up

tie up and close up both are verbs.

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

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

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

tie up (verb)	close up (verb)
secure with or as if with ropes	refuse to talk or stop talking; fall silent
finish the last row	block passage through
restrain from moving or operating normally	unite or bring into contact or bring together the edges of
secure in or as if in a berth or dock	cease to operate or cause to cease operating
invest so as to make unavailable for other purposes

tie up (adverb)	close up (adverb)
	very close