A puzzle that uses images and/or text, where solving the puzzle requires examination of the components' attributes. Typically wordplay combining the images/text will yield a word or phrase.
A rebus is a visual puzzle that presents the reader with an image containing a set of letters or pictures, for example:
and asks the reader to determine what word or phrase is represented by the image. Usually the phrase uses pictures or letters to represent pieces of the word at a time.
In the above puzzle, the answer is red in the face, as the word
RED can be found in-between the letters of the word
HEAD HEEL HEEL
represents head over heels.