viviparous

Ooviparous is likely misspelled.

Ooviparous has no English definition.

As an adjective viviparous is

being born alive, as are most mammals, some reptiles, and a few fish (as opposed to being laid as an egg and subsequently hatching, as do most birds and many other species).

As a noun taxonomy

is the science or the technique used to make a classification.

As an adjective viviparous is

(of an animal or animal species) being born alive, as are most mammals, some reptiles, and a few fish (as opposed to being laid as an egg and subsequently hatching, as do most birds and many other species).

Oviporous is likely misspelled.

Oviporous has no English definition.

As an adjective viviparous

is being born alive, as are most mammals, some reptiles, and a few fish (as opposed to being laid as an egg and subsequently hatching, as do most birds and many other species).

Parous is a related term of viviparous.

As adjectives the difference between viviparous and parous

is that viviparous is being born alive, as are most mammals, some reptiles, and a few fish (as opposed to being laid as an egg and subsequently hatching, as do most birds and many other species) while parous is having given birth.

As adjectives the difference between viviparous and nonviviparous

is that viviparous is (of an animal or animal species) being born alive, as are most mammals, some reptiles, and a few fish (as opposed to being laid as an egg and subsequently hatching, as do most birds and many other species) while nonviviparous is not viviparous.

As adjectives the difference between viviparous and livebearing

is that viviparous is (of an animal or animal species) being born alive, as are most mammals, some reptiles, and a few fish (as opposed to being laid as an egg and subsequently hatching, as do most birds and many other species) while livebearing is (biology) that bears live offspring; viviparous.