Dictionary.com Thesaurus.com

oviparous vs. viviparous

oviparous

[oh-vip-er-uhs] / oʊˈvɪp ər əs /

adjective

Zoology.

producing eggs that mature and hatch after being expelled from the body, as birds, most reptiles and fishes, and the monotremes.

viviparous

[vahy-vip-er-uhs, vi-] / vaɪˈvɪp ər əs, vɪ- /

Zoology. bringing forth living young rather than eggs, as most mammals and some reptiles and fishes.
Botany. producing seeds that germinate on the plant.