reef line vs reefing line

reef line and reefing line both are nouns.

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

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

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

Other synonyms of reef line include reef point.

reef line (noun)	reefing 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.