What is Cannabis?

Some people may not know what cannabis even is; it is just the name from where marijuana comes from. It has actually been used for a drug for a very long time but just started to get very popular in the 20th century. These plants are also made to make clothing, sheets, pillow cases, and many other things. So, I know this was my third posting and I should have put the meaning of it up earlier, just for people who do not really know what it was.