A chainsaw is a portable handheld power saw that cuts with a set of teeth attached to a rotating chain driven along a guide bar.
A chainsaw cutting a small wooden board
Historical osteotome, a medical bone chainsaw
Typical of the earliest chainsaws, this gasoline-powered Dolmar saw was operated by two men
Electric chainsaw
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