the world > matter > physics > energy or power of doing work > [noun] > capacity for exertion of mechanical force > power or rate of work known as horse-power
horsepower1860
traction power1908
poke1965
1908 Westm. Gaz. 13 Feb. 5/2 American machines..are geared so low as to give them a maximum of traction power at the expense of speed.