Camera Parts.

Aperture: An opening, as a hole, slit, crack, gap, etc.

Shutter: A movable cover, slide, etc., for an opening.

Exposure: The act of exposing.

Depth Of Field: The range of distances along the axis of an optical instrument, usually a camera lens, through which an object will produce a relatively distinct image.
Also called depth of focus. 

F-Stop: The setting of an adjustable lens aperture, as indicated by an f number.

Focal Length: The distance from a focal point of a lens or mirror to the corresponding principal plane.


Buttons On The Back Of The Camera.

Aperture Button: 
This button to open up the light hole. 
Live View Shooting Button: 
This is button is used to see the picture you are currently taken.
Setting Button: 
This button has a list of all the settings.
Menu Button: 
This button brings up a list of things you can do.
Playback Button: 
This button playbacks the pictures just taken.
Af Piont Selection Button: 
This button helps with direction.
AE Lock Button: 
This button is kind of like a lock screen on a phone. It locks the camera screen.
Display Button: 
This button displays the pictures currently in the camera.
Quick Control Button: 
This button is used to make split second decisions. 


Buttons On TheTop Of The Camera.

Shutter Button: 
This button takes more than one picture at a time.
Lens Release Button: 
This button releases the lens on the front of the camera.
Flash Button: 
This button turns the flash on.
Hot Shoe Button: 
This button helps you take better pictures at night.
Mode Dial: 
This button helps you set the mode the camera will be in.