Adobe Create Cloud Storage Full: Light Room Classic - Remove Synced Photographs

I've read several blog posts in addition to reddit posts but I can't see to find a concise answer. I'm trying to clear my Adobe Creative Cloud storage as I'm getting the message my cloud storage is full. I'm in Adobe Lightroom Classic and the 'All Synced Photographs' folder. I've highlighted all the photos I no longer want to take up space in the cloud. From here do I just hit delete/backspace or would it be better to select 'Remove from all Synced Photographs' in the right click menu? What is the different between these 2 actions? Please help! :)