RHYTHM in art and design refers to a relationship between elements that creates a sense of harmony . Rhythm can be seen in patterns, in relationships between colours and shapes, and in repetitions of lines and forms. - bbc.co.uk
REPETITION is simply repeating a single element many times in a design. For example, you could draw a line horizontally and then draw several others next to it. ... We can also use shapes, colors, textures, fonts, etc. to maintain this consistency via repetition. You can also achieve repetition by using repeated messages. - interaction-design.org
Alternating Rhythm: A rhythm that consists of successive patterns in which the same elements reappear in a regular order. The motifs alternate consistently with one another to produce a regular (and anticipated) sequence.
Installation Art: A mixed-media artwork that generally takes into account the environment in which it is arranged.
Kinesthetic Empathy: When a visual experience (an art piece) stimulates one of our other senses..
Legato: A connecting and flowing rhythm.
Motif: An element of an image. The term can be used both of figurative and narrative art, and ornament and geometrical art. A motif may be repeated in a pattern or design, often many times, or may just occur once in a work.
Non Objective Artwork: A type of artwork with absolutely no reference to, or representation of, the natural world.
Polyrhythmic Rhythm: A complex pattern employing more than one visual rhythm or musical beat. A study in overlay of several rhythmic patterns at the same time.
Progressive Rhythm: The repetition of a shape that changes in a regular manner. A series of shapes that gets bigger or smaller as it repeats demonstrates progressive rhythm.
Staccato Rhythm: Staccato describes a visual rhythm of short and quick consecutive visual elements (or sound in music).
Visual Rhythm: A design principle that is based on repetition of visual elements.
Vibrating Colors: Colors that create a disturbance in the retina creating a visual vibration for the viewer.