mooring line vs mooring

mooring line and mooring both are nouns.

Word	Noun	Adjective	Verb	Adverb
mooring line	Yes	No	No	No
mooring	Yes	No	No	No

As nouns, mooring line and mooring are synonyms defined as:

mooring line and mooring: (nautical) a line that holds an object (especially a boat) in place

mooring line (noun)	mooring (noun)
(nautical) a line that holds an object (especially a boat) in place	(nautical) a line that holds an object (especially a boat) in place
	a place where a craft can be made fast