Procedure:
This is the most common usage. In programming, a procedure refers to a subroutine or function that performs a specific task or calculation.
Process:
"Proc" can sometimes be used as an abbreviation for "process," referring to a series of actions or steps taken to achieve a particular result.
Procurement:
In business and supply chain management, "proc" may be used as shorthand for "procurement," which involves the process of acquiring goods or services from external sources.
Proclamation:
"Proc" can also mean "proclamation," an official or public announcement, usually made by a person in authority, such as a government official.
Procedural:
The term "proc" can sometimes be used to describe something related to procedures or protocols, especially in a technical or scientific context.