Can I add my take on this discussion, based on my understanding of the Skt
parallels:.
1. Bbhs are NOT a type of compound per se, in the sense that tappurisas
and kammadhaarayas are. It is a secondary application of other compounds.
2. Bbhs are typically an adjectical use of Tps and Kds, exocentrically
referring to something outside of them, though that something need not be
expressed but instead implied.
3. The last member of the compound that is being used in a Bbh fashion
may already be an adjective, BUT if it is a noun, then that noun functions
as an adjective.