Help me put Oracle terminology into SQL Server terminology

My company is now supporting Oracle for the first time, and most of my colleagues are SQL Server developers who haven't really worked with Oracle. I'm a little bit familiar with Oracle, but far from a genius on the subject. Unfortunately, that is enough to mean that I know more about Oracle than most of my co-workers, so I find myself constantly struggling to explain concepts I'm still learning myself in terms that people who aren't familiar with Oracle at all can understand. The biggest problem that I run into is in knowing how SQL Server terminology translates into Oracle terminology. I understand that there's not a direct 1:1 mapping of terms, but it would be helpful to be able to know how to put Oracle concepts into SQL Server terminology and vice-versa when talking to my SQL Server-centric co-workers. Can someone tell me the best way to put these SQL Server terms into Oracle terminology? - database - instance - schema And conversely, how to explain these Oracle concepts in SQL Server terms? - tablespace - database - listener - service name - SID