spermatozoid vs gamete

spermatozoid and gamete both are nouns.

Word	Noun	Adjective	Verb	Adverb
spermatozoid	Yes	No	No	No
gamete	Yes	No	No	No

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

spermatozoid: a motile male gamete of a plant such as an alga or fern or gymnosperm
gamete: a mature sexual reproductive cell having a single set of unpaired chromosomes

spermatozoid (noun)	gamete (noun)
a motile male gamete of a plant such as an alga or fern or gymnosperm	a mature sexual reproductive cell having a single set of unpaired chromosomes