registrar vs record-keeper

registrar and record-keeper both are nouns.

Word	Noun	Adjective	Verb	Adverb
registrar	Yes	No	No	No
record-keeper	Yes	No	No	No

As nouns, registrar and record-keeper are synonyms defined as:

Other synonyms of registrar include recorder.

registrar (noun)	record-keeper (noun)
someone responsible for keeping records	someone responsible for keeping records
the administrator responsible for student records
a person employed to keep a record of the owners of stocks and bonds issued by the company