Unison

• To harmonize exactly as in singing music at the same pitch or in octaves

• To be united with one another

• Having to do with space

• Having to do with school

United

• To be joined or combined

• To be in harmony with one another

• Being in agreement

• Holding hands

Universe

• The entire cholesterol cosmos

• Population in relation to humans

• The population of a city

• Having to do with outer space and the planets

Duel

• To be in conflict or combat with someone

• To fight a duel

• They fight in which two people participate in

• Two things

Duet

• Composition of two performers

• A dance involving two people

• Two people performing or competing in a double act

• A dance

Duplicate

• Being the same as the another

• To make an exact copy or something equal to such as a document or repeat

• To have two of the same or similar things

• To make an exact copy of

Triangle

• A polygon Having three sides

• A percussion instrument shaped like a Triangle made of bent steel, and sounded by striking it with a small metal rod

• Shape in which there’s three sides

• Shape in which there is 10 sides

Tricycle

• Three wheel vehicle, propelled by pedals, hand, levers or motor

• A vehicle in which there is only three wheels

• Having to do with the three weird vehicle

• A vehicle with three handlebars

Trio

• The musical piece for three boys parts are three instruments

• A group of three

• Three people competing in an act

• A fight in which there is three people

Quadrilateral

• A polygon four sides

• Having four sides

• An object in which there is a four dimensional shape

• Four people in a group