Can thinset be used instead of grout?

Thinset and grout serve different purposes in tile installation. Thinset is an adhesive used to bond tiles to a substrate, while grout fills the spaces between the tiles to provide a finished look and prevent moisture infiltration. Using thinset instead of grout is not recommended, as it lacks the necessary properties to properly fill joints and may lead to issues like cracking or water damage. For best results, it's important to use each material as intended.