I'm having some difficulty with the various verbs that exist for bending and turning and could really use some insight into them: 曲がる - Intransitive 曲げる - Transitive 回る - Intransitive 回す - Transitive
JDIC additionally lists 転じる, which I'm not familiar with.
I get the feeling that the 曲-based ones are more of a "bending" or "one-time turning" concept while the 回-based ones are more of a turning/rotating/spinning concept. More cyclical, you know?
[回転]{かいてん}
also means "rotate/revolve". – istrasci Jan 21 '14 at 20:37