Aeonian and Spread-out

Aeonian adjective - Of or relating to a geological eon (longer than an era).

Spread-out and aeonian are semantically related. In some cases you can use "Spread-out" instead an adjective "Aeonian".

Spread-out adjective - Especially spread in a fan shape.

Aeonian and spread-out are semantically related. Sometimes you can use "Aeonian" instead an adjective phrase "Spread-out".