Jesus christ this needs to stop. People need to learn their shit.
Pure MDMA is crystal 3,4-methylenedioxy-N-methylamphetamine, a street name for MDMA is molly. So when you buy pure molly you get pure 3,4-methylenedioxy-N-methylamphetamine.
Usually the crystals are grinded up into a powder. Sold as a loose powder or in capsules
HOWEVER a lot of the market is filled with adulterated products which can contain anything from caffeine, RCs (research chemicals) or even shit like meth.
Ecstasy is a pill that is pressed so its a tablet.. 99% of ecstasy contains adulterants. Also ranging from caffeine to meth.
MDMA = Molly and MDMA or Molly never = Ecstasy.
(Most powdered MDMA is falsely called "pure MDMA" while containing a cocktail of drugs)
Ecstasy can be made of MDMA, however usually contains other things.