Can you subtitute tapioca starch for pva?

Tapioca starch and PVA (polyvinyl acetate) serve different purposes and have distinct properties, so substituting one for the other isn't straightforward. Tapioca starch is a natural thickening agent commonly used in cooking, while PVA is a synthetic polymer often used in adhesives and coatings. If you're looking for a thickening agent, tapioca starch can work, but it won't provide the same adhesive properties as PVA. Always consider the specific application and desired outcome when making substitutions.