gamete vs germ cell

gamete and germ cell both are nouns.

Word	Noun	Adjective	Verb	Adverb
gamete	Yes	No	No	No
germ cell	Yes	No	No	No

As nouns, germ cell is a hypernym of gamete; that is, germ cell is a word with a broader meaning than gamete:

gamete: a mature sexual reproductive cell having a single set of unpaired chromosomes
germ cell: a spermatozoon or an ovum; a cell responsible for transmitting DNA to the next generation

Other hypernyms of gamete include reproductive cell, sex cell.

gamete (noun)	germ cell (noun)
a mature sexual reproductive cell having a single set of unpaired chromosomes	a spermatozoon or an ovum; a cell responsible for transmitting DNA to the next generation