spermatozoid

In biology terms the difference between motile and spermatozoid

is that motile is having the power to move spontaneously while spermatozoid is a motile, ciliated male gamete produced in the antheridium of an alga, fern or gymnosperm.

As an adjective motile

is having the power to move spontaneously.

As a noun spermatozoid is

a motile, ciliated male gamete produced in the antheridium of an alga, fern or gymnosperm.

In biology|lang=en terms the difference between spermatozoid and protogynous

is that spermatozoid is (biology) a motile, ciliated male gamete produced in the antheridium of an alga, fern or gymnosperm while protogynous is (biology) exhibiting protogyny.

As a noun spermatozoid

is (biology) a motile, ciliated male gamete produced in the antheridium of an alga, fern or gymnosperm.

As an adjective protogynous is

(biology) exhibiting protogyny.