We live in a hierarchical world. In a law firm, the levels are pretty clear. From top to bottom it goes something like this: Managing Partner, Other Partners (ranked in order of billings and client originating credits), Senior Associates, Professional Managers, Junior Associates, Law Clerks, Legal Assistants, Clerical Staff, Articling Students, and Cleaners.
Everyone in a law firm has a pretty good notion about what the hierarchy is, although Articling Students have sometimes found out to their shock and horror that they do in fact rank under the Law Clerks, Legal Assistants, and Clerical Staff.