mortgager vs mortgagor

mortgager and mortgagor both are nouns.

Word	Noun	Adjective	Verb	Adverb
mortgager	Yes	No	No	No
mortgagor	Yes	No	No	No

As nouns, mortgager and mortgagor are synonyms defined as:

mortgager and mortgagor: the person who gives a mortgage in return for money to be repaid

mortgager (noun)	mortgagor (noun)
the person who gives a mortgage in return for money to be repaid	the person who gives a mortgage in return for money to be repaid