Calc-tufa and Rock

Calc-tufa noun - A soft porous rock consisting of calcium carbonate deposited from springs rich in lime.

Rock and calc-tufa are semantically related. In some cases you can use "Rock" instead a noun phrase "Calc-tufa".

Rock noun - A usually valuable stone cut and polished for ornament.

Calc-tufa and rock are semantically related. Sometimes you can replace phrase "Calc-tufa" with "Rock", this terms are similar.

Nearby Words: rocky, rocking, rocked, rocker, rockery