Using the above analogy, the supply chain can be considered the entire chair, while procurement and sourcing are parts of the chair. Procurement Procurement is the process of getting the goods and/or services your company needs to fulfill its business model.
The use of street address meaning just the line with number and street name is (valid) jargon usage within a technical industry, but it's not so commonly understood that way by the general public.
PMB addresses allow small businesses to have a professional-looking street address, have someone available during regular delivery hours to sign for letters or packages, pick up the mail at convenient hours, and retain privacy, which can be important for the owners of home-based businesses.