Exterior and Yolk

Exterior noun - An outer part or layer.

Yolk is an antonym for exterior.

Nearby Words: external, exteriority, exteriorize, externally, exteriorized

Yolk noun - Nutritive material of an ovum stored for the nutrition of an embryo (especially the yellow mass of a bird or reptile egg).

Exterior is an antonym for yolk in inner core topic.