cirque

As a noun cirque

is (geology) a curved depression in a mountainside with steep walls, forming the end of a valley.

As an adjective undefined is

lacking a definition or value.

Circus is a descendant of cirque.

As nouns the difference between cirque and circus

is that cirque is a curved depression in a mountainside with steep walls, forming the end of a valley while circus is a traveling company of performers that may include acrobats, clowns, trained animals, and other novelty acts, that gives shows usually in a circular tent.

As nouns the difference between cirque and tran

is that cirque is (geology) a curved depression in a mountainside with steep walls, forming the end of a valley while tran is forehead.

As an adjective cinque

is fifth.

As a noun cirque is

(geology) a curved depression in a mountainside with steep walls, forming the end of a valley.

As nouns the difference between taxonomy and cirque

is that taxonomy is the science or the technique used to make a classification while cirque is (geology) a curved depression in a mountainside with steep walls, forming the end of a valley.

In geology terms the difference between cirque and headwall

is that cirque is a curved depression in a mountainside with steep walls, forming the end of a valley while headwall is the steep cliff at the back of a cirque.