What is the difference between raw, pasteurised and composted materials?

Pasteurised materials have been processed to kill plant and animal pathogens as well as weed propagules/seeds. This generally occurs at temperatures higher than 55C. Composted materials are pasteurised and microbially transformed for not less than 6 weeks. Composted materials contain no weed seeds or pathogens and this is a matured, stabilised product.