Final answer:
In the nervous system, a collection of axons with a common origin and destination is called a tract in the CNS and a nerve in the PNS.
Step-by-step explanation:
In the nervous system, a collection of axons with a common origin and a common destination is called a tract. This term is used to describe bundles of axons in the central nervous system (CNS). In the peripheral nervous system (PNS), a similar bundle of axons is called a nerve.