tie up vs moor

tie up is not a noun while moor is a noun.

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

As verbs, tie up and moor are synonyms defined as:

Other synonyms of tie up include berth.

tie up (noun)	moor (noun)
	open land usually with peaty soil covered with heather and bracken and moss

tie up (verb)	moor (verb)
secure with or as if with ropes	secure with cables or ropes
finish the last row	secure in or as if in a berth or dock
restrain from moving or operating normally	come into or dock at a wharf
secure in or as if in a berth or dock
invest so as to make unavailable for other purposes