Difference between opiate and opiod

[angelo]

What is the difference between an opiate and an opiod?

[Dr.Stein]

Did you mean "opiate" and "opioid"?

Opiate = opium-like (natural)
Opioid = opiate-like (synthetic)
Opium = a narcotic drug obtained from seed of Poppy (Papaver somniferum L.)

This is what I got from wikipedia:
Opiate was an extended-play release by alternative rock band Tool in 1992, coming just a year before their first full-length album, Undertow, and some two years after their formation in 1990 and tours with Rage Against the Machine

WTH?

[cardiorrhexis]

And Tool, along with Morphine (also an opioid) were both up for best music video in the 1997 Grammy's...

[Dr.Stein]

Whatt??

[angelo]

"opioid
An opioid is any agent that binds to opioid receptors, found principally in the central nervous system and gastrointestinal tract. There are four broad classes of opioids: endogenous opioid peptides, produced in the body; opium alkaloids, such as morphine (the prototypical opioid) and codeine; semi-synthetic opioids such as heroin and oxycodone; and fully synthetic opioids such as pethidine and methadone that have structures unrelated to the opium alkaloids.

Although the term opiate is often used as a synonym for opioid, it is more properly limited to the natural opium alkaloids and the semi-synthetics derived from them."

:I found this on wikipedia. is it correct?