A pruned node discards from persistent storage (disk, SSD) blocks for which it has no additional use.
A pruned node subsequently can not assist with the preliminary synchronisation of a brand new full-node.
A pruned node can cross on unconfirmed transactions in its mempool and, no less than within the case of Bitcoin-core pruned-nodes, the final 288 blocks.
A pruned node downloads precisely the identical quantity of knowledge per 30 days as a fully-synchronised full-node. It in all probability uploads much less because it retains much less. Precise quantities in all probability depend upon connectivity and ranges of Bitcoin community exercise (i.e I have never measured this).
