Bokeh - When the background is blurred in a photo and the subject is very focused, the background might appear as small circles.
Camera Angles - Different angles the camera can take photos of a subject. The photographer could take photos from the left, right, birds eye view, front facing, below - there are many different angles you can photograph with.
Close up - A Photo taken very up close to a subject, and you can get very close with a macro lens. Close ups can often be taken of insects, flowers ect.
Composition - The appealing way a photo has been arranged. If you were photographing pictures for a photography book, you could compose it with the main subject -the food, foreground - a placemat, background - the kitchen, and supporting objects - cutlery.
Contrast - The difference in the light to dark areas of a photo. It is the brightness range of a subject or the scene lighting.
Depth of Field - When the camera focuses on a subject close to the camera, and the background, or things in the distance become very blurry.
Graininess - When a photo is blurry in some parts, it may appear grainy or sandy.
Lens - One or more pieces of glass put together designed to catch rays to create images on film.
Macro Lens - A lens designed to capture very close up images of smaller subjects, such as insects or flowers etc.
Over Exposure - When a photo is over exposed, the camera has let too much light in and therefore is way too bright.
Shutter - The blades in a camera that open and close to take the photo. The whole time the shutter is open it is taking a photo. The longer the shutter is open the more light that comes in, and makes the image brighter.