Hemp is the Male species of the cannabis family while the buds we smoke is the female species. Hemp used for taxtiles are breed especialy for no THC less than .05%. Hemp is breed for other things as well and needs to be breed for even more. A good example is the oil from hemp is much more productive in making fuel than any other oil including petrolum, and it grows in a matter of 3 months or less in some areas.

Hemp male

Bud Female

right now in france you can buy hemp lumber for building homes, and it is fire resistant and chemical resistant.