historiographer vs historian

historiographer and historian both are nouns.

Word	Noun	Adjective	Verb	Adverb
historiographer	Yes	No	No	No
historian	Yes	No	No	No

As nouns, historiographer and historian are synonyms defined as:

historiographer and historian: a person who is an authority on history and who studies it and writes about it

historiographer (noun)	historian (noun)
a person who is an authority on history and who studies it and writes about it	a person who is an authority on history and who studies it and writes about it