# Speak and write with confidence.

To help you avoid using the same word too repetitively, redundantly, recurrently, incessantly, etc., etc.

To help you avoid using the same word too repetitively, redundantly, recurrently, incessantly, etc., etc.

**Synonyms:** infinitesimal calculus, calculus
**Definition:** the branch of mathematics that is concerned with limits and with the differentiation and integration of functions

**Hypernyms:** pure mathematics
**Definition:** the branches of mathematics that study and develop the principles of mathematics for their own sake rather than for their immediate usefulness

**Synonyms:** calculus, concretion
**Definition:** a hard lump produced by the concretion of mineral salts; found in hollow organs or ducts of the body
**Usage:** renal calculi can be very painful

**Hypernyms:** rock, stone
**Definition:** a lump or mass of hard consolidated mineral matter
**Usage:** he threw a rock at me

**Synonyms:** tartar, tophus, calculus
**Definition:** an incrustation that forms on the teeth and gums

**Hypernyms:** crust, encrustation, incrustation
**Definition:** a hard outer layer that covers something