The tool would be either a table saw or a radial arm saw with the blade rotated parallel to the fence. The type of cut is called a rip (as opposed to against the grain, which is called cross-cut).
It is said to not cut wood against the grain as an old wives' tale. The main reason that wood is cut with the grain is because it only needs to slightly touch the fibers of the wood to cut it, so it is easier.
A rip saw.
A rip saw cuts along the grain, whereas the crosscut saw cuts perpendicular to it.
With the grain. A cross cut saw is for across the grain. A rip saw should have bigger teeth.
Because teeth are sized and angled for cutting across woodgrain.
A rip saw is a saw designed to cut with the grain, it generally has more aggressive teeth. A saw designed to cut across the grain is called a cross cut saw.
It is the thin line a saw cuts in material.
A compass saw is used to make curved cuts
The tenon saw is for making straight fairly short cuts in wood.
I'm not being smart, a backstroke saw. There are Japanese saws that cut both ways. There is a blade for a jig saw that cuts on the up stroke for cutting laminate from underneath so it doesn't chip.
a (chain)saw perhaps?
swirly
A person who cuts down trees is a Lumberjack. A tool that cuts trees into timber is a saw.
Hand saws are usually in two groups: A tenon saw is a fine toothed saw for cutting across the grain of the wood, and for fine work. A rip saw is a causer toothed saw that is used to saw down the grain of the wood, and for rougher work.