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handsaw 
Very common manual saw, suited for straight cuts in boards or wood panels.
tooth 
Small point forming the cutting part of the blade. Together, their number, shape and disposition vary depending on the intended use.
handle 
heel 
Rear end of a blade, partially or completely encased in the handle.
toe 
Front end of a blade, usually narrower than the heel.
back 
Toothless edge of a blade.
blade 
Long and rigid but slightly flexible, it is designed for following a straight line.