first mortgage vs mortgage

first mortgage and mortgage both are nouns.

Word	Noun	Adjective	Verb	Adverb
first mortgage	Yes	No	No	No
mortgage	Yes	No	Yes	No

As nouns, mortgage is a hypernym of first mortgage; that is, mortgage is a word with a broader meaning than first mortgage:

first mortgage: a mortgage that has priority over all mortgages and liens except those imposed by law
mortgage: a conditional conveyance of property as security for the repayment of a loan

first mortgage (noun)	mortgage (noun)
a mortgage that has priority over all mortgages and liens except those imposed by law	a conditional conveyance of property as security for the repayment of a loan

first mortgage (verb)	mortgage (verb)
	put up as security or collateral