| A | B |
| trio | a name fo three musical performers |
| centipede | a wormlike animal with many pairs of legs |
| unicorn | an imaginary animal with a single, long horn |
| triangle | a figure with three sides and three angles |
| biweekly | occurring every two weeks |
| triplet | a group or set of three |
| unicycle | a mode of transportation that has one wheel |
| bisect | to cut into two equal parts |
| centimeter | a unit of lenght |
| unison | together or at the same time |
| uniform | a particular design or clothing worn by a particular group of people |
| trycicle | a mode of transport that has three wheels |
| university | a place of higher learning |
| century | one hundred years |
| universe | an expanse space containing stars, galaxies, planets and many intergalactic bodies |
| binoculars | an optical instrument for use with both eyes |
| unify | to become or act as one |
| bicycle | a mode of transport that has two wheels |
| trilogy | a group of three related works, novels, plays, operas or albums |
| bilingual | a person who is able to use two languages with fluency |
| tripod | a three legged object, stand or support |
| triple | three times as much in size, amount, number or strenght |