The wall acts as a separative between the two rooms.

There are many separators in the kitchen drawer.

The separabilities of the two concepts are evident in their distinct characteristics.

The separableness of the two substances allowed for easy extraction.

The separatenesses of the two cultures were evident in their traditions and customs.

She completed the tasks separatively.

The separational barrier between the two countries has caused tension and conflict.

The separatives in the room were all neatly organized.

Her separativeness made it difficult for her to form close relationships.

The separations of powers in a democratic government ensure a system of checks and balances.