Hashish n. : A slightly acrid gum resin produced by the common hemp (Cannabis saltiva), of the variety Indica, when cultivated in a warm climate; also, the tops of the plant, from which the resinous product is obtained. It is narcotic, and has long been used in the East for its intoxicating effect. See Bhang, and Ganja.

Example:
What is the ratio of the value between Hashish and marijuana?

Taxonomy
hash, plant, trichomes, resin, flowers, hash oil, herbs, charas, the leaves, cannabis buds, fingers, Afghanistan, powder, muslin, History, cannabis resin, free encyclopedia, preparations.

Defination from the web:
hashish saw an increase in the 20th century, in Europe and America, associated with the hippie scene which promoted pacifism and introspection. Hashish use declined significantly in the United States starting in the 1980s for several reasons, including U.S. political pressures ...