Vorticism

Henri Gaudier-Brzeska, Head of Ezra Pound

Cubism

Marcel Duchamp, Nude Descending a Staircase, 1912

It's important to consider the differences between cubism and vorticism, despite the similarities in some aspects of their styles (the hard, sharp lines; the interest in movement; the estrangement of the visual field by reorganizing the picture plane; etc.)