We don't have synonyms for potiches yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are patches, postiche and potiche.
(n) :
(ceramics) A vase with a separate cover, the body usually rounded or polygonal in plan with nearly vertical sides, a neck of smaller size, and a rounded shoulder.
(n) :
(ceramics) A vase with a separate cover, the body usually rounded or polygonal in plan with nearly vertical sides, a neck of smaller size, and a rounded shoulder.