Distributor
Part of speech: noun
Definition: One who distributes, a thing that distributes. In an internal combustion engine, the device that distributes current to the spark plugs.
Example sentence: Everyone in the book's ecology, starting with the author and including the publisher, the distributor, the booksellers, the libraries, and ending up with the reader, should benefit from a healthy book trade.
Allocator
Part of speech: noun
Definition: The person who allocates.