Lava is a MOLTEN ROCK material that is expelled from a volcano during an eruption. The crossword solutions for the term lava include ROCK (4 letters), SLAG (4 letters), BASALT (6 letters), MAGMA (5 letters), SCORIA (6 letters), ASH (3 letters), LAMP (4 letters), FLOW (4 letters), MOLTEN (6 letters), pumice (6 letters), pahoehoe (8 letters), and ejecta (6 letters). ROCK is a naturally occurring solid aggregate of minerals, while SLAG is a by-product of metal smelting or refining. BASALT is a dark-colored, fine-grained igneous ROCK, while MAGMA is MOLTEN ROCK material beneath the surface of the earth. SCORIA is a type of volcanic ROCK with a vesicular texture, while ASH is the powdery residue left after combustion. LAMP is a type of lava that is low in silica content, while FLOW is the movement of MOLTEN lava. MOLTEN is a term used to describe something that has been melted, while pumice is a light-colored, porous volcanic ROCK. Pahoehoe is a type of lava FLOW characterized by smooth, billowy surfaces, and ejecta is material that is ejected from a volcano during an eruption.