[chaosite]

I mean, these terms are defined and widely understood, so, um, no.

"gold open access" is where you publish to a peer-reviewed open-access journal, which may or may not involve the author paying for the privilege.

"green open access" is where you publish to any peer-reviewed journal, and then the author self-archives the paper somewhere, like an institutional website, arXiv (as a "post-print", not a pre-print), or even Sci-Hub.

There are discussions involved about copyright and license and so on, but that's the gist of it.