SLR: A single-lens reflex (SLR) camera is a camera that typically uses a semi-automatic moving mirror system that permits the photographer to see exactly what will be captured by the film or digital imaging system

TLR: A twin-lens reflex camera (TLR) is a type of camera with two objective lenses of the same focal length One of the lenses is the photographic objective (the lens that takes the picture), while the other is used for the waist-level viewfinder system. 

Shutter: A shutter is a device that allows light to pass for a determined period of time, for the purpose of exposing photographic film or a light-sensitive electronic sensor to light to capture a permanent image of a scene. A shutter can also be used to allow pulses of light to pass outwards, as in a movie projector or signal control

Shutter speed control: shutter speed is a common term used to discuss exposure time, the effective length of time a camera's shutter is open.

Aperture:

The aperture stop of a photographic lense can be adjusted to control the amount of light reaching the film or image sensor.

f/32 - narrow aperture and slow shutter speed

f/5.6 - wide aperture and fast shutter speed

ASA/ISO: is the speed with which your film or digital camera responds to light, so the higher the ISO/ASA rating the more sensitive the film or CCD/CMOS sensor is to light.

ASA Dial: Spped setting to rewind film back to the canister

Shutter Button:  is a button found on many cameras, used to take a picture

Rewind Knob:a knob that rewinds the film in the camera