When you delete a Reddit post or comment yourself, it says [deleted]. When it is removed by a subreddit mod, it says [removed] or if at the end of a comment chain, just doesn’t appear at all. Occasionally an admin removed comment will say [Removed by Reddit] instead of just [removed] but not always.

I’m happy to explain that, though it seems like farting in the wind now that we’re all gone, lol.

Shame I could do a better job of explaining it in three sentences than I have ever seen Reddit do anywhere, though.