I don't get that if I own shares how can someone else do anything with them that makes no sense at all i buy shares but there not my shares ,not makeing any scence to me
Loaned shares can only come from margin accounts. Typically when you open a margin account there is in the fine print a clause that allows your broker to loan your shares. You receive nothing for this but also have no risk.
They both can be borrowed for shorting RSII however if they were bought on Margin your broker does not need permission to lend those RSII shares as opposed to a cash account they do