A saw is a tool consisting of a tough blade, wire, or chain with a hard toothed edge used to cut through material. Various terms are used to describe toothed and abrasive saws.
Roman sawblades from Vindonissa approx. 3rd to 5th century AD
Bronze-age saw blade from Akrotiri, late Cycladic period c. 17th century BC
Saw grinding in Sheffield, 1860
Rip sawing c. 1425 with a frame or sash saw on trestles rather than over a saw pit
A blade is the sharp, cutting portion of a tool, weapon, or machine, specifically designed to puncture, chop, slice, or scrape surfaces or materials. Blades are typically made from materials that are harder than those they are intended to cut. This includes early examples made from flaked stones like flint or obsidian, evolving through the ages into metal forms like copper, bronze, and iron, and culminating in modern versions made from steel or ceramics. Serving as one of humanity's oldest tools, blades continue to have wide-ranging applications, including in combat, cooking, and various other everyday and specialized tasks.
The blade of a Japanese sword
Blade with a nail pull
Clip-point blade
Spear-point blade