I'd say the follow are the major areas of 'commercial search' or verticals. I may be missing a few in my haste:
Real Estate (Homes, commercial)
Computers, Electronics (Consumer goods and business)
Software (Packaged, developers, ASP, etc.)
Medicine (Doctors, Hospitals, Medication)
Professional (Lawyers, Accounting, Engineers, etc.)
Travel (Hotels, Airfare, Ground Transfer, Rentals)
Education (College, University)
Sales Lead Generation (Industrial, commercial)
Generally, I'd say "local search" is about "local consumption": Something I pick up from a local business and consume in my hometown OR something I consume/use "when I arrive locally". It could also include goods/services I purchase for someone else's consumption at a distant location. I don't include in "local search" general consumer mass market products that ship from a remote location to my home "if only by chance or price".
Des Moines Iowa
Any city population 25-75,000 anywhere.
Feel free to add any city/vertical for which you have information.