pull-up vs pull-in

pull-up and pull-in both are nouns.

Word	Noun	Adjective	Verb	Adverb
pull-up	Yes	No	No	No
pull-in	Yes	No	No	No

As nouns, pull-up and pull-in are synonyms defined as:

pull-up (noun)	pull-in (noun)
an arm exercise performed by pulling yourself up on a horizontal bar until your chin is level with the bar	a roadside cafe especially for lorry drivers
a roadside cafe especially for lorry drivers