In Proper Order!

Here is a word reminiscent of my library school days.  The professor who taught us cataloging and classification (currently called “organization and description of materials”) was fond of the term collocation which aptly described the reasoning behind the assignment of call numbers — to ensure that the books are collocated properly.

collocate

\ kol–uh-keyt \
verb (used with object),
1.  to set or place together, especially side by side.
2.  to arrange in proper order: to collocate events.
verb (used without object),
3.  Linguistics: to enter into a collocation.
noun,
4.  Linguistics: a lexical item that collocates with another.