Post-Impressionism started out in the 1910 by the art critic Roger Fry when he was starting an exhibition in the Grafton Gallery. Post impressionism is a famous art movement which followed quickly after Impressionism.
It is a term which is mainly used about Vincent Van Gogh and Paul Gauguin, even though they do not have much in common. They just came after impressionism.
post-impressionism: A school of painting in France in the late 19th century that rejected the objective naturalism of impressionism and used form and color in more personally expressive ways.
roger fry
It can generally be considered a more loose style, and (generally) art only became more so until the current art movement.
The different types of art include: abstract, baroque, byzantine, cubism, dadaism, fauvism, impressionism, neoclassicism, pop, postimpressionism, realism, romanticism, and surrealism.
Romanic, gothic, renaissance, mannerism, baroque, rococo, neoclassicism, romanticism, impressionism, postimpressionism, pointillism, symbolism, synthetism,intimism, art nouveau, expressionism, fauvism. There are more.