Dress them up! The main canvas of the interior or exterior space, flooring actually is the first level defining element of a space. Whether natural stones or tiles, wooden slats or poured concrete; the choice of flooring aids the process of choosing all other elements that are placed on or above it.
Using same overall and light-coloured flooring enhances the feeling of spaciousness; whereas mixing up two (or more) options visually delineates spaces; often easily leading to functional demarcation too.
Anti-skid tiles are good for bathrooms or for pool-decks. Other special flooring options are needed in facilities such as gymnasiums and indoor sports.