Check is a pattern of modified stripes consisting of crossed horizontal and vertical lines which form squares. The pattern typically contains two colours where a single checker is surrounded on all four sides by a checker of a different colour.
Checkered exterior of Hiorn Tower
Mural in Veerabhadra temple
Check pattern as appearing on a dress
Music Group Ska Patrol. Member wearing Ska's signature checkered scarf
Tartan is a patterned cloth with crossing horizontal and vertical bands in multiple colours, forming simple or complex rectangular patterns. Tartans originated in woven wool, but are now made in other materials. Tartan is particularly associated with Scotland, and Scottish kilts almost always have tartan patterns.
Three tartans; the left and right are made with the "modern" dye palette; the middle is made with "muted" colours.
1970s Missoni tartan knit jumper (sweater) and skirt set
Visualisation of 2/2 twill weave: the black weft threads go two over then two under the orange warp threads, staggered by one thread each pass (resulting in a diagonal pattern). In the actual cloth, the white gaps would be closed.
Close-up view of traditional tartan cloth, showing pattern of diagonal "ribs" of colour; this is a five-colour tartan, in scarlet red, black, yellow, azure blue, and crimson red.