roll-on roll-off vs train

roll-on roll-off and train both are nouns.

Word	Noun	Adjective	Verb	Adverb
roll-on roll-off	Yes	No	No	No
train	Yes	No	Yes	No

roll-on roll-off (noun)	train (noun)
a method of transport (as a ferry or train or plane) that vehicles roll onto at the beginning and roll off of at the destination	public transport provided by a line of railway cars coupled together and drawn by a locomotive
	wheelwork consisting of a connected set of rotating gears by which force is transmitted or motion or torque is changed
	piece of cloth forming the long back section of a gown that is drawn along the floor
	a series of consequences wrought by an event
	a procession (of wagons or mules or camels) traveling together in single file
	a sequentially ordered set of things or events or ideas in which each successive member is related to the preceding

roll-on roll-off (verb)	train (verb)
	exercise in order to prepare for an event or competition
	undergo training or instruction in preparation for a particular role, function, or profession
	create by training and teaching
	teach and supervise (someone); act as a trainer or coach (to), as in sports
	point or cause to go (blows, weapons, or objects such as photographic equipment) towards
	drag loosely along a surface; allow to sweep the ground
	travel by rail or train
	educate for a future role or function
	teach or refine to be discriminative in taste or judgment
	develop (a child's or animal's) behavior by instruction and practice; especially to teach self-control
	cause to grow in a certain way by tying and pruning it