In patchwork, foundation piecing was originally a method used to stabilize pieces of fabric that were stitched together. It first became popular in the 18th and 19th centuries in England, although a 15th-century Italian piece, the Impruneta cushion owned by Antonio degli Agli, may have used foundation piecing. A similar process popular in Britain is English paper piecing.

Is it true that is foundation piecing the same as paper piecing?
no