2. (foll by with) to associate (oneself) or be associated, esp as a subordinate or subsidiary; bring or come into close connection: he affiliated himself with the Union. b. (as modifier): an affiliate member.
Opiate is a term classically used in pharmacology to mean a drug derived from opium. Opioid, a more modern term, is used to designate all substances, both natural and synthetic, that bind to opioid receptors (including antagonists}. Opiates are alkaloid compounds naturally found in the opium poppy plant Papaver somniferum.
Morphine is an opiate Opiates These are substances isolated from  the opium poppy or synthetic relatives. (They are also called  opioids.) Examples: morphine codeine heroin â¦fentanyl (a synthetic  that is. 3 people found this useful.