Chalk vs. Gypsum

Chalk vs. Gypsum — Is There a Difference?
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Difference Between Chalk and Gypsum

Chalknoun

(uncountable) A soft, white, powdery limestone.

Gypsumnoun

A mineral consisting of hydrated calcium sulphate. When calcined, it forms plaster of Paris.

Chalknoun

(countable) A piece of chalk, or nowadays processed compressed gypsum, that is used for drawing and for writing on a blackboard.

Gypsumnoun

a common white or colorless mineral (hydrated calcium sulphate) used to make cements and plasters (especially plaster of Paris)

Chalknoun

Tailor's chalk.

Chalknoun

A white powdery substance used to prevent hands slipping from holds when climbing, sometimes but not always limestone-chalk.

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Chalknoun

A platoon-sized group of airborne soldiers.

Chalknoun

The prediction that there will be no upsets, and the favored competitor will win.

Chalkverb

To apply chalk to anything, such as the tip of a billiard cue.

Chalkverb

To record something, as on a blackboard, using chalk.

Chalkverb

To use powdered chalk to mark the lines on a playing field.

Chalkverb

(figuratively) To record a score or event, as if on a chalkboard.

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Chalkverb

To manure (land) with chalk.

Chalkverb

To make white, as if with chalk; to make pale; to bleach.

Chalknoun

a soft whitish calcite

Chalknoun

a pure flat white with little reflectance

Chalknoun

amphetamine used in the form of a crystalline hydrochloride; used as a stimulant to the nervous system and as an appetite suppressant

Chalknoun

a piece of chalk (or similar substance) used for writing on blackboards or other surfaces

Chalkverb

write, draw, or trace with chalk