Cases of word usage

1) an apparatus for storing and producing electricity (battery)

2) an apparatus for blowing or forcing air into something e.g. a fire, an organ in a church (bellows)

3) an apparatus for reducing speed or stopping motion e.g. of a bicycle, vehicle etc (brake)

4) (usually pl) an apparatus for reducing the effect of a collision e.g. on a railway engine (buffer)

5) an apparatus used for taking photographs or for broadcasting TV programs etc (camera)

6) an apparatus for charging a battery (charger)

7) an apparatus used for holding things together tightly by means of a screw (clamp)

8) a strange-looking apparatus or machine (contraption)

9) a clumsy, strange, apparatus (contrivance)

10) an apparatus used for cooking food (cooker)