recorder vs registrar

recorder and registrar both are nouns.

Word	Noun	Adjective	Verb	Adverb
recorder	Yes	No	No	No
registrar	Yes	No	No	No

As nouns, recorder and registrar are synonyms defined as:

Other synonyms of recorder include record-keeper.

recorder (noun)	registrar (noun)
a tubular wind instrument with 8 finger holes and a fipple mouthpiece	someone responsible for keeping records
equipment for making records	the administrator responsible for student records
someone responsible for keeping records	a person employed to keep a record of the owners of stocks and bonds issued by the company
a barrister or solicitor who serves as part-time judge in towns or boroughs