tie up vs berth

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

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

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

Other synonyms of tie up include moor.

tie up (noun)	berth (noun)
	a job in an organization
	a bed on a ship or train; usually in tiers
	a place where a craft can be made fast

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