pull-off vs layby

pull-off and layby both are nouns.

Word	Noun	Adjective	Verb	Adverb
pull-off	Yes	No	No	No
layby	Yes	No	No	No

As nouns, pull-off and layby are synonyms defined as:

pull-off and layby: designated paved area beside a main road where cars can stop temporarily

Other synonyms of pull-off include lay-by, rest area, rest stop.

pull-off (noun)	layby (noun)
designated paved area beside a main road where cars can stop temporarily	designated paved area beside a main road where cars can stop temporarily