For smaller homes with wood or laminate, a flat mop gives the best water control. For large tile floors, a spin mop is convenient. If you mop often, a wet-dry floor vacuum saves the most effort but needs a low-foam solution. Whatever you pick, a clean pad and the right amount of water matter most.
Not by default. Both need to be low-foam, but they differ in strength, dilution and device limits. Only swap them when the label says the product works in both robot mops and wet-dry vacuums and your manuals allow it, and dilute to each machine's ratio.