roll up vs brail

roll up is not a noun while brail is a noun.

Word	Noun	Adjective	Verb	Adverb
roll up	No	No	Yes	No
brail	Yes	No	Yes	No

As verbs, brail is a hyponym of roll up; that is, brail is a word with a more specific, narrower meaning than roll up:

Other hyponyms of roll up include douse, reef, bolt, gather in, take in.

roll up (noun)	brail (noun)
	a small rope (one of several) used to draw a sail in
	a small net used to draw fish into a boat

roll up (verb)	brail (verb)
form a cylinder by rolling	haul fish aboard with brails
form into a cylinder by rolling	take in a sail with a brail
show certain properties when being rolled
make into a bundle
close (a car window) by causing it to move up, as with a handle
arrive in a vehicle:
get or gather together