license vs licenser

license and licenser both are nouns.

Word	Noun	Adjective	Verb	Adverb
license	Yes	No	Yes	No
licenser	Yes	No	No	No

license (noun)	licenser (noun)
the act of giving a formal (usually written) authorization	an official who can issue a license or give authoritative permission (especially one who licenses publications)
a legal document giving official permission to do something
freedom to deviate deliberately from normally applicable rules or practices (especially in behavior or speech)
excessive freedom; lack of due restraint

license (verb)	licenser (verb)
authorize officially