In more-speech the term 'block' simply means to exclude either an author, or a thread, from a particular tab. Even then it can allow the "blocked" event in if that event passes another filter that allows it. For example, you may be have a tab that is interested in a particular thread, but have blocked an author. If the author posts an event in that thread, you'll still see it.
>From: Giszmo at 03/27/23 12:07:05 on wss://nostr.oxtr.dev
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>Block or mute? On Snort there is both and I wonder what they are. As mute is public, I switched to muting now.