Both move federal money. They are governed differently.
A quick reference for the acronyms that fill solicitations.
Every federal buyer asks for it. What belongs on it and what to leave off.
The FAR is the rulebook for most federal buying. It is long, but it is organized logically. A map of its structure for contractors who want to find what applies to them.
Federal contracting has its own vocabulary. This glossary explains common terms and acronyms in plain language, from CO and COR to IDIQ, RFQ and UEI.
Federal contracting comes with its own alphabet. Here is what the Unique Entity ID, CAGE code, NAICS codes and PSCs are, and where each one comes from.