licence vs O.K.

licence and O.K. both are nouns.

Word	Noun	Adjective	Verb	Adverb
licence	Yes	No	Yes	No
O.K.	Yes	No	Yes	Yes

licence (noun)	O.K. (noun)
a legal document giving official permission to do something	an endorsement
freedom to deviate deliberately from normally applicable rules or practices (especially in behavior or speech)
excessive freedom; lack of due restraint

licence (verb)	O.K. (verb)
authorize officially	give sanction to

licence (adverb)	O.K. (adverb)
	in a satisfactory or adequate manner