pull-up vs Britain

pull-up and Britain both are nouns.

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

pull-up (noun)	Britain (noun)
an arm exercise performed by pulling yourself up on a horizontal bar until your chin is level with the bar	a monarchy in northwestern Europe occupying most of the British Isles; divided into England and Scotland and Wales and Northern Ireland; `Great Britain' is often used loosely to refer to the United Kingdom
a roadside cafe especially for lorry drivers