I actually very recently learned that we have a flag called --keep-blocks. We where also teaching students about Polkadot recently in Polkadot academy and they are somewhat confused about the concept of "block state" and "blocks" themselves, and how keeping one is optional, and the name of these two flags being totally unrelated does not help.

I think these two flags are very similar, and should be named accordingly:

• --keep-blocks and --keep-state
• --state-pruning and --blocks-pruning