pixel - the word is based on a contraction of pix ("pictures") and el (for "element"); similar formations with el for "element" include the words: voxel and texel. In digital imaging, a pixel (or picture element) is a single point in a raster image. The pixel is the smallest addressable screen element, it is the smallest unit of picture which can be controlled.

freestyle - (intransitive) To improvise one's own style;
(third-person singular simple present freestyles, present participle freestyling, simple past and past participle freestyled)