WordNet sense 1 (loose soil rich in organic matter):

mold

WordNet sense 2 (sculpture produced by molding):

modeling, molding, moulding, clay sculpture

WordNet sense 3 (container into which liquid is poured to create a given shape when it hardens):

cast

WordNet sense 4 (form in clay, wax, etc):

model

WordNet sense 5 (make something, usually for a specific function):

forge, form, shape, work, shape