http://www.fda.gov/downloads/TobaccoProducts/Labeling/RulesRegulationsGuidance/UCM191940.pdf
Section 3 paragraphs 4and 5
http://www.fda.gov/downloads/TobaccoProducts/GuidanceComplianceRegulatoryInformation/UCM527944.pdf
Section 3 paragraph 3
It is a codified definition that applies to all law in the US. Now apply that to section 905 that you just love to quote.
Also since you obviously don't know what this common term is
Definition of BUSINESS
Or this one
What is place of business? definition and meaning
Game, set, match, but by all means feel free to continue to show your ignorance and laziness.