Cases of word usage

1) the creation or expression of what is beautiful, especially in visual form; great skill or ability in such expression (art)

2) the varied visual sensation produced by rays of light (and different from looking at black and white only) (colour)

3) of visual symbols (e.g. lettering, diagrams, drawings) (graphic)

4) metal goods for domestic use, e.g. pots and pans; mechanical equipment in a computer system e.g. the central processing unit, visual display unit etc (hardware)