Quick note re the difference between ethno and entheo

Ethno relates to people (ie ethnocentric, ethnic etc) it's the field of study of plants used by people (essentially for medicinal/spiritual purposes these days)

Entheo is a combination of two Greek words - En (within) and theo (god - eg theology etc)

An entheogen is any substance used to find the 'god within' (and I've seen argued as being different from purely psychoactive substances)

Clip notes from a word geek!