Whetstone or Waterstone is an abrasive flat stone. It is used for sharpening your blade’s edge. A knife’s abrasiveness should be paralleled to a wet stone knife sharpener.
Kitchen knives are important tools for preparing food. Constant use makes your knife blunt day by day that is unnoticeable to you. Once your knife was sharp, now it is dull.
A blunt knife is an obstacle to chop, slice, and dice food. While preparing food with a blunt knife, there is a chance of missing the mark and not cutting straight. Apart from this, a blunt knife is difficult to use. The best way to sharpen kitchen knives is using a whetstone. What you need is patience and a little practice on how to use a whetstone.