Freshwater is replenished by watercycle so it's renewable but total amount water in our world is limited-it cant be replenished so doesn't it come under nonrenewable resource.why is water said renewab?

The water cycle allows us to reuse the water over and over again, unlike something like oil, which once it is used cannot be recombined in any sort of quantities to be used again. It is a renewable resource because water is being created all the time. There are numerous ways that water is created from other compounds. Add an acid and a base together and you typically end up with water and a gas as a result.