bibliography vs bibliographer

bibliography and bibliographer both are nouns.

Word	Noun	Adjective	Verb	Adverb
bibliography	Yes	No	No	No
bibliographer	Yes	No	No	No

bibliography (noun)	bibliographer (noun)
a list of writings with time and place of publication (such as the writings of a single author or the works referred to in preparing a document etc.)	someone trained in compiling bibliographies