Do Nested Transactions commit?
I don't think there is a problem using the word commit and personally I don't see a better wording for the concept.

Most database systems do not support nested transactions, the only one I could find is BerkelyDB.

In their documentation on nested transactions they are using commit as the term.


  Committing a nested transaction has no effect on the state of the
  parent transaction.


In the book Concepts and Applications of Multilevel Transactions and Open Nested Transactions (1992)  they seem to be using the same wording.


  subtransactions can be made persistent independently of their commit
  state