fishing permit vs fishing license

fishing permit and fishing license both are nouns.

Word	Noun	Adjective	Verb	Adverb
fishing permit	Yes	No	No	No
fishing license	Yes	No	No	No

As nouns, fishing permit and fishing license are synonyms defined as:

fishing permit and fishing license: a license authorizing the bearer to fish during a specified period of time

Other synonyms of fishing permit include fishing licence.

fishing permit (noun)	fishing license (noun)
a license authorizing the bearer to fish during a specified period of time	a license authorizing the bearer to fish during a specified period of time