Basalt and Obsidian

Basalt noun - The commonest type of solidified lava; a dense dark grey fine-grained igneous rock that is composed chiefly of plagioclase feldspar and pyroxene.

Obsidian and basalt are semantically related in volcano matter topic. In some cases you can use "Obsidian" instead a noun "Basalt".

Nearby Word: basaltic

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

Basalt and obsidian are semantically related in volcano matter topic. You can use "Basalt" instead a noun "Obsidian".