| A | B |
|---|
| antenna | one of the two long thin feelers on the head of many insects and of some water animals |
| antenna | a metal rod or wire used to send and receive radio ant tv messages |
| balance | a state of being firm and steady |
| balance | to stay in a steady position without falling |
| balance | to hold something in a steady position |
| boulder | a large rounded rock resting on or in the ground |
| cliff | a steep high rock face with a sharp drop to the ground below |
| joint | the place where two parts meet or come together |
| machine | an object that is used to do certain kinds of work |
| motor | an object that provides the power to make something move or do work |
| muscle | a part of the body that can be stretched or tightened to make the body move |
| planet | a large object in space that moves in a regular path around the sun or some other star |
| slope | a surface, a line, or a piece of land that is higher at one point than at another |
| slope | to lie at an angle |
