Obsidian and Sable

Obsidian noun - Acid or granitic glass formed by the rapid cooling of lava without crystallization; usually dark, but transparent in thin pieces.

Sable and obsidian are semantically related. in black topic. In some cases you can use "Sable" instead an adjective "Obsidian", when it comes to topics like dark.

Sable adjective - Having the color of soot or coal.

Obsidian and sable are semantically related. Sometimes you can use "Obsidian" instead an adjective "Sable".