limescale

As a noun limescale

is a white, chalky deposit of calcium carbonate found in kettles, washing machines etc, especially in a hard water area.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between limescale and mold

is that limescale is a white, chalky deposit of calcium carbonate found in kettles, washing machines etc., especially in a hard water area while mold is a hollow form or matrix for shaping a fluid or plastic substance.

As a verb mold is

to shape in or on a mold.

As nouns the difference between limescale and scale

is that limescale is a white, chalky deposit of calcium carbonate found in kettles, washing machines etc., especially in a hard water area while scale is a ladder; a series of steps; a means of ascending.

As a verb scale is

to change the size of something whilst maintaining proportion; especially to change a process in order to produce much larger amounts of the final product.

As nouns the difference between limescale and limestone

is that limescale is a white, chalky deposit of calcium carbonate found in kettles, washing machines etc., especially in a hard water area while limestone is an abundant rock of marine and fresh-water sediments; primarily composed of calcite (CaCO₃); it occurs in a variety of forms, both crystalline and amorphous.

As an adjective limestone is

made of or with limestone.

As nouns the difference between limescale and mould

is that limescale is a white, chalky deposit of calcium carbonate found in kettles, washing machines etc., especially in a hard water area while mould is an alternative spelling of lang=en.

As a verb mould is

an alternative spelling of lang=en.

As a noun limescale is

a white, chalky deposit of calcium carbonate found in kettles, washing machines etc, especially in a hard water area.

As nouns the difference between limescale and timescale

is that limescale is a white, chalky deposit of calcium carbonate found in kettles, washing machines etc., especially in a hard water area while timescale is an alternative spelling of lang=en.

As a noun limescale

is a white, chalky deposit of calcium carbonate found in kettles, washing machines etc, especially in a hard water area.

As an adjective limescaled is

having a deposit of limescale.

As nouns the difference between taxonomy and limescale

is that taxonomy is the science or the technique used to make a classification while limescale is a white, chalky deposit of calcium carbonate found in kettles, washing machines etc, especially in a hard water area.