subject- the subject in the picture is the main object or person you are looking at. it is normally in the centre of the photograph.
focal point- in photography a focal point is the main point of interest and it draws attention to it.
composition- if you compose a photo then your are moving around and putting the photo together so it looks as good as possible.
framing- a frame outline the photo and makes it interesting and it draws your attention to the photo so you want to look at it.
rule of thirds- the rule of thirds is when you take a landscape picture you divide the picture into thirds and at each third point there is somethign interesting.
foreground- the foreground is something at the front of the picture, it is the main object or person.
background- the background is at the abck of the photograph and it is usually far away, there may be other things in the foreground which could be blurred out.