Cannabis, also known as marijuana, marihuana, or ganja (from Nepali/Urdu/Hindi/Sanskrit: गांजा/گانجا gañjā, hemp) refers to any number of preparations of the cannabis plant intended for human consumption as a drug, the most common of which being the natural, untampered herbal form.

The herbal form of the drug consists of mature female flowers and sub-tending leaves of pistillate (female) plants. The resinous form, known as hashish, consists primarily of glandular trichomes collected from the same plant material. The major biologically active chemical compound in cannabis is Δ⁹-tetrahydrocannabinol (delta-9-tetrahydrocannabinol), commonly referred to as THC.

Humans' consumption of cannabis pre-dates history. In the 20th century there was a considerable increase in its use for recreational, religious or spiritual, and medicinal purposes. It is estimated that about four percent of the world's adult population (162 million) use cannabis annually and 0.6

Flowers

• Cannabis, Marijuana or ganja: the flowering tops of female plants, from less than 1% THC to 22% THC; the wide range is probably one of the reasons for the conflicting results from different studies.

Psychoactive potency by cannabis plant part is approximately as follows (descending order):

1. Trichomes
2. Female flowering buds
3. Male flowering buds
4. New shoots
5. Leaves from flower buds
6. Leaves in ascending order of size
7. Stems of leaves (petioles) in ascending order of size
8. Stems in ascending order of size
9. Roots and seeds

Hashish

• Hashish (pressed kief) or charas: a concentrated resin composed of heated glandular trichomes that have been physically extracted, usually by rubbing, sifting, or with ice.

Kief

• The sticky resin-saturated bits of plant before being pressed into hashish.
• Moroccan hashish produced in the Rif mountains;
• sifted cannabis trichomes consisting of only the glandular "heads" (often incorrectly referred to as "crystals" or "pollen");
  (4) the trichomes ("crystals") left at the bottom of a grinder after grinding marijuana, then gathered and smoked.

Hash oil

main: Honey oil

Resin

Methods of consumption