| Vocabulary | Summary |
| Parallel sequence operations | |
| Low-level wait/notify support | |
| Count-down latches | |
| Erlang-style distributed concurrency | |
| Object exchange points | |
| Flags for cross-thread notification of conditions | |
| Deferred computations | |
| Traditional locks and many reader/single writer locks | |
| Mailboxes for inter-thread message passing | |
| Erlang/Termite-style message-passing concurrency | |
| Thread-safe write-once variables | |
| Counting semaphores |