Paintings

I use a variety of paints and different types of surface materials.

The Definition I looked up online...
Painting is the practice of applying paint, pigment, color or other medium to a solid surface. The medium is commonly applied to the base with a brush, but other implements, such as knives, sponges, and airbrushes, can be used. In art, the term painting describes both the act and the result of the action.
(That last part is interesting.)