Referencible Glossary of DID Terms and Definitions?

Is there a referencible glossary of terms and definitions we can use? ...or do we need to build a glossary/terminology list as we go?
As an example, people in today's first WG meeting were asking and questioning the definitions of: ephemeral, web-based, self-resolvable, single-key and decentralized. We will need a great deal of precision and mutual understanding for these terms as well as many others I imagine.

A glossary is a pre-requisite for effective any substantive dialog/debate.