trapezium

As a proper noun triangle

is the area comprising the cities of used with "the" except when attributive.

As a noun trapezium is

(geometry|british) a four-sided polygon with two sides parallel; a trapezoid (modern sense).

As nouns the difference between trapezium and trampoline

is that trapezium is a four-sided polygon with two sides parallel; a trapezoid (modern sense while trampoline is a gymnastic and recreational device consisting of a piece of taut, strong fabric stretched over a steel frame using many coiled springs as anchors.

As a verb trampoline is

to jump as if on a trampoline.

As nouns the difference between elephant and trapezium

is that elephant is a mammal of the order Proboscidea, having a trunk, and two large ivory tusks jutting from the upper jaw while trapezium is a four-sided polygon with two sides parallel; a trapezoid (modern sense.

As nouns the difference between trapezium and fireplace

is that trapezium is (geometry|british) a four-sided polygon with two sides parallel; a trapezoid (modern sense) while fireplace is an open hearth for holding a fire at the base of a chimney.

As nouns the difference between trapezium and square

is that trapezium is a four-sided polygon with two sides parallel; a trapezoid (modern sense while square is a polygon with four sides of equal length and four angles of 90 degrees; a regular quadrilateral whose angles are all 90 degrees.

As an adjective square is

shaped like a square (the polygon).

As a verb square is

to adjust so as to align with or place at a right angle to something else.

As nouns the difference between trapezium and quadrangle

is that trapezium is a four-sided polygon with two sides parallel; a trapezoid (modern sense while quadrangle is a geometric shape with four angles and four straight sides; a four-sided polygon.

As nouns the difference between trapezium and scorpion

is that trapezium is (geometry|british) a four-sided polygon with two sides parallel; a trapezoid (modern sense) while scorpion is someone with the scorpio star sign.

As an adjective scorpion is

(astrology) of, or pertaining to, the scorpio star sign.

As nouns the difference between trapezium and rectangle

is that trapezium is (geometry|british) a four-sided polygon with two sides parallel; a trapezoid (modern sense) while rectangle is (geometry) a quadrilateral having opposing sides parallel and four right angles.