Cases of word usage

1) a long pole used to keep the bottom of a sail stretched out (boom)

2) a solid or hollow body shaped like a pole or log (cylinder)

3) a measurement round anything like a pole in shape: 'a tree 10 meters in girth' (girth)

4) a tall pole for a flag, a ship's sails, a TV aerial etc (mast)

5) a pole with a flat base, used to move a boat through the water (oar)

6) of, near, the North or South Pole (polar)

7) a branch, pole etc on which a bird, especially a hen, sleeps (roost)

8) a tool with a long curved blade on a long wooden pole with two short handles, used for cutting long grass, grain etc (scythe)

9) a weapon with a metal point on a long pole (spear)

10) an arched roof; series of arches forming a roof; an underground room used for storing things (e.g. a 'wine vault') or for keeping valuables ( a 'bank vault') or for dead bodies (e.g. under a church); to jump in a single movement, with the hand(s) resting on something, or with the help of a pole (vault)