Scientific name: anacardium occidentale
The cashew, or caju, is a small tree native to Brazil. Cashew nuts are the seeds of the cashew apple, and are found in the grey bump at the end of the fruit in the picture. The cashew apple itself is sweet, soft and juicy.
Cashews are usually sold roasted and salted and eaten as a snack.
A cask is a reasonably small container, usually used for storing alcoholic drinks. Casks are usually shaped like a small barrel, although the term is often applied to cheaper boxed wine too.
Scientific name: casuarius casuarius
Cassowaries are very large flightless birds that live in tropical forests of New Guinea and northeastern Australia. The only birds bigger than the cassowary are the ostrich and emu.
Cassowaries mainly eat fruit, but will also eat new shoots, seeds and fungi, insects and small animals. Cassowaries usually travel around on their own except when it is time to find a mate and lay eggs.
The booming noise the cassowary makes is the lowest known bird call, and is so low humans can only just hear it.
A castle is a large building usually made out of stone. Castles were designed to be very defensive, so the people living inside would be safe from attack. They were usually built as homes for noble families or royal families. Castle design changed over the centuries to keep up with improvements in equipment designed for breaking into castles.
After the invention of gunpowder and cannons, castles were no longer so effective against attacks. The building of new castles gradually stopped, and more recent castles are more decorative than defensive. The most recent castles are either replica castles or just very large mansions with some castle features added to them for decoration.
The centremost tower in a castle is called a keep, the most secure part of the castle. The ditch around the castle which may or may not be filled with water is called a moat. The top edges of the castle walls are covered by battlements, which were used for archers to hide behind.
