Emphasis:

Emphasis is a principle of art which occurs any time an element of a piece is given dominance by the artist. In other words, the artist makes part of the work stand out, in order to draw the viewer's eye there first. This photo shows emphasis by having the background all the same color so the purple bow pops out more.

Horizontal Lines:

Lines that run east to west to lengthen a photograph. The stairs in this photo have horizontal lines and create calmness and tranquility. 

Repetition/ Pattern:

Repeating visual elements such as line, color, shape, texture, value or image tends to unify the total effect of a work of art as well as create rhythm. Repetition can take the form of an exact duplication (pattern), a near duplication, or duplication with variety. The multiple cookies in this picture lined up the same way throughout the photo shows a pattern and repetition.

Bird's eye view:

A bird's-eye view is an image gained when the position of the observer is significantly higher than that of the subject. This is showing this perfectly in the way that all of the tops of the buildings are shown making it seem as though the viewer is flying.

Vertical Lines:

Lines being shown going towards the sky, usually symbolizing spirituality. In this photo the glass behind the man and child have lines going from south to north nonstop which create a photo of all vertical lines.

Texture:

 The appearance and feel of a surface shown in a photograph to draw in the viewer. The ropes shown in the photo show in great depth texture in a photography by the shade and emphasis used.

symmetrical Balance: 

 one side balances or mirrors the other side exactly in the photograph taken. The trees being exactly the same on either side further shows the symmetrical balance.

 Unity:

 All elements of a piece of work come together to produce a balanced complete whole. These gumballs are all tied together with elements of color and shape to create unity.

Rule of thirds:

Compositional rule of thumb where the whole image is divided into 9 equal parts to help the photographer create a better photo. This lighthouse being put on one of the lines helps the viewer's eyes draw into the subject.

Diagonal Lines:

Lines that run in slanted directions to further show movement in the photograph. The man and the dog being in a diagonal line helps show that they are in motion and makes the viewer see this as a motion picture.

Variety:

Differences in elements and principles of design that give interests to a composition. Having subjects in the photo the same, yet different types. This photo is full of breads but all different shapes and shades of breads.

Simplicity:

Singling out an item from their surroundings such as making a simple background and a simple focal point. This egg shown is very simple along with the background being a neutral color makes this photo very calm.

Asymmetrical Balance:

         

Different objects balance each other out on either side of the photograph in an unsymmetrical way. This type of balance is shown  with these chess pieces because one piece is bigger than the others and the sides are not identical.

Movement/ Rhythm:

A photo that shows action and the path of the viewer's eyes through the artwork. This dancer's legs are spread and the way she is placed shows she is leaping through the air, showing movement and rhythm in the way the photo comes together.

Leading Lines:

Lines that lead the eye to other points in the image, or even outside of the image. This road is leading to the mountains and draws your eyes to the horizon line. The road getting smaller better leads your eyes away.

Proportion/Scale:

The size of one object is compared to the size of another and shown side by side in a composition. The couple is shown to be as small as the cigarette in comparison. Both these items are small compared to the background.

Horizon Line:

Used to emphasis the sky of ground based on the placement of the line. Usually used to show depth also. This horizon line is blurring the water and sky together and showing the difference between each at the same time.

Framing:

Direct viewer's attention to what is important using objects or elements existing in the scene. These mountains outside are being seen through a wooden window to present framing.

Worm's eye view:

 Showing an object from below  to better create weakness in some photos. Showing from this point of view can make the subject look bigger. This plane looks bigger and more intimidating  from this angle.

 

Curving Lines:

Lines that deviate from straightness in a smooth continuous fashion. Lines that seem to never end or stop curving. This river is a curving line that never ends and never stopped curving.