What is neo-symbolism and "The Second Avante-Garde" in regard to poetry?

Question

And are they separate or do they relate/connect in someway

Answer 1

Neo-symbolism
Also known as Imagism, part of the world-wide movement of a period/ time called — anti-Symbolism (second avant garde).

Avant-garde
A French term meaning "vanguard". It is used in literary criticism to describe new writing that rejects traditional approaches to literature in favor of innovations in style or content. Twentieth-century examples of the literary avant-garde include the Black Mountain School of poets, the Bloomsbury Group, and the Beat Movement.

They are similar since both use French alexandrine and syllabic structure.

The Second Avante-Garde is simply what is referred to in the American poetry circles as neo-symbolism.
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People, especially French and American people, tend to forget that the heart of the United States was once French. Not only was all of Canada and all of the Mississippi drainage from the Alleghenies to the Rockies under the French flag, as everybody knows, but French and French-Indian mountain men had penetrated to the West Coast before any of the officially recognized explorers and discoverers, for whom they were in fact often the guides. Deep in the Northern Rockies is the town of Coeur d’Alene, Idaho. In Nevada, Wyoming, Oregon, many of the leading merchants in the small towns are descended from the French, and they often still name their children Pierre, Jeanne and Yvonne — conspicuous among the recent rash of movie-star first names, dictated by the mysteries of Hollywood “numerology” which cause the Roman Catholic clergy such distress at baptism. Not only are towns all over the Middle West named such things as Prairie du Chien and Vincennes, not only are their leading families named Sublette and Le Sueur and Deslauriers, but — something very few people realize — French life survived intact in hundreds of small isolated communities until well into the twentieth century.
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