Knives are sharp because they are used to cut things.
More information:
Well-sharpened knives are safer to use than dull knives, because they slice cleanly through food. Dull knives require more force and often slip or bounce instead of cutting as they should, making accidents more likely.
Yes, knives are sharp when bought but become blunt when not sharpened regularly.
Sharp knives are less likely to slip off of the material being cut, and so are considered safer.
Sure, here's a sentence using the word "knives": "I used sharp knives to carefully slice the vegetables for the salad."
no
No, they are not. Knives may be shiny and sharp, but things such as my watch are not sharp.
not really sharp knives.
The possessive form is the knives' edges.
Sharp Stones.
lookin' sharp
Knives and scissors have edges to cut things, but nails do not have sharp edges, they have points to penetrate hard surfaces.
the sharp knives work better because they give u a better cut then blunt ones
Because sharp knives cut better.