Kitchen knife a slotted metal blade attached to a handle. Also known as a Mezzaluna (Italian: "half moon") because of the shape, a mincing knife is a semicircular highly curved blade with a handle that allows the blade to be rocked back and forth repeatedly on a hard surface. This rocking motion is ideal for mincing and chopping. Some mincing knives are supplied with a wooden cutting board with a circular bowl-shaped indentation that matches the curvature of the knife. Some models have two blades that are parallel to each other to increase their mincing power. Large mezzaluna-like knives with shallow curves
Mower blade work in three ways: lifting, mowing, and mulching. First, the blade pulls the grass up and cuts it. Then, clippings are sucked inside the deck and are chopped into tinier pieces. Finally, the blade’s innermost curve produces air pressure to blow the small clippings out, where they are used to feed the soil. The lifting blade features a slightly curved surface which creates a vertical upward airflow that lifts the grass up and is assumed to provide a cleaner result than the other types of blades. Low suction power; recommended for mowing terrain with sandy soil. Medium suction power; uses