→ Is PVA the same as PVOH?

Yes. PVOH (polyvinyl alcohol homopolymer) and PVA (polyvinyl alcohol) are essentially the same thing. PVOH is an abbreviation for polyvinyl alcohol homopolymer, which refers to the polymer formed by the hydrolysis of polyvinyl acetate. The terms PVOH and PVA are often used interchangeably to describe this water-soluble synthetic polymer.