Form
Objects that are three dimensional have length, width, and height. Forms take up space whether designed or natural. Form can be measured typically in height, length, and width.
In this photo of a fountain pen nib, I see the pen, paper, and the line made by the pen. The Form, can be seen in the, shape of the nib, and length of the pen. This Form conveys a sense of abstractness in my opinion. This image is appealing to me because the photo focuses only on the pen.
In this photo of small rocks, I see dark colored rocks and light colored rocks. The Form, can be seen in the shapes of the rocks, the length, and the width. This Form conveys a sense of uniqueness in my opinion. This image is appealing to me because of the different shapes of rocks.