1 The real name is cannabis only if you mean marijuana. wich is a flowering plants. one or the three is a marijuana plant Cannabis sativa Cannabis indica Lam."do to laws I won't tell wich one. Cannabis ruderalis Janisch. These three taxa are indigenous to central Asia and surrounding regions. Cannabis has long been used for fibre (hemp), for medicinal purposes, and as a psychoactive. Industrial hemp products are made from Cannabis plants selected to produce an abundance of fiber and minimal levels of THC, a psychoactive molecule that produces the "high" associated with marijuana. The psychoactive consists of dried flowers and leaves of plants selected to produce high levels of THC. Various extracts including hashish and hash oil are also produced from the plant The cultivation and possession of Cannabis for recreational use is outlawed in most countries.

2 If not then it is just an unwanted plant in a garden or backyard

Noun: a friend who is usually only called upon by a friend when a more primary/prominent friend is unavailable.

Taken from the term “second string” in an athletic competition situation. In football, if the star quarterback gets injured during a play, the second string is called off the bench to replace him/her. A “Second String Friend” is essentially benched until needed, if ever.

Synonyms: Plan B, Second Choice, Secondary Friend, Benched Until Needed