reefing line vs reef line

reefing line and reef line both are nouns.

Word	Noun	Adjective	Verb	Adverb
reefing line	Yes	No	No	No
reef line	Yes	No	No	No

As nouns, reefing line and reef line are synonyms defined as:

reefing line and reef line: (nautical) one of several short lengths of line stitched through a sail for tying a reef.

Other synonyms of reefing line include reef point.

reefing line (noun)	reef line (noun)
(nautical) one of several short lengths of line stitched through a sail for tying a reef.	(nautical) one of several short lengths of line stitched through a sail for tying a reef.