This is how my friends and I define: On Grid, Off Grid, Going Off The Grid, & Boon Docking
There may be other definitions as defined by other people but this is how most people I know do so. Feel free to comment about your idea of what defines these.
By defining them accurately in such away the communities that partake in them can agree on then we establish a meaning for them. And by doing that we help to better define laws and regulations and codes that may or may not affect those of us living in these ways.