What is reducing?
Reduce is where you make it smaller or use less amount of it. A few examples of reducing would be reducing you're packaging waste, if you are needing something you are gonna only use once see if you can borrow one from someone, and by turning off the water when not using it.
Reuse is where you use it more than once maybe for the same thing or something else. A few examples would be like old t shirts and things you can use them to make a handbag or something like that, newspaper you can use to store items, and used wood you can use for woodcrafts.
Recycle is to convert (waste) into reusable material. Examples could be recycling paper, plastic, and metal.