Ais forAlexandrite
You bite something when you hold it in your mouth, between your teeth. You usually bite to break off a piece of something, like biting off a mouthful of an apple.
The cat in the picture is biting the woman's nose.
Insects like mosquitos that don't have mouths like ours can still bite you with their tongues.
When two or more people or animals get angry with each other, sometimes they will fight, and try and hurt each other with words or their fists. Sometimes people fight for money, as in a boxing match or street fighting.
Animals often fight with each other over food, nesting space, or at breeding season.
You can also use fight as a noun, as in "those people are having a fight".
Fis forFlashlight
A flashlight, sometimes called a torch, is a small device that has a handle at one end and a light at the other end. You use it for finding your way around somewhere dark that doesn't have any other light sources, like at night when you are camping, or if there is a power failure, or in a cave.
Graphite is a form of carbon. It has the interesting property of being made up of very thin layers that can be easily rubbed off, so is perfect for drawing with. Graphite is the main ingredient of the "lead" in lead pencils.
Graphite can also conduct electricity, so it has many applications in engineering and electronics.