registrar vs employee

registrar and employee both are nouns.

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

As nouns, employee is a hypernym of registrar; that is, employee is a word with a broader meaning than registrar:

registrar: a person employed to keep a record of the owners of stocks and bonds issued by the company
employee: a worker who is hired to perform a job

registrar (noun)	employee (noun)
someone responsible for keeping records	a worker who is hired to perform a job
the administrator responsible for student records
a person employed to keep a record of the owners of stocks and bonds issued by the company