1. Cities by relative sizes:
Megalopolis-
contiguous cities that form linear urban areas
Examples:
Boston, MA to Richmond, VA
San Diego to Ventura, CA
Miami to Cocoa, FL
Daytona to Tampa, FL

2. Well known megalopolis in the USA
Richmond VA-Boston MA
San Diego-Ventura, CA
I-4 Corridor
Homestead- Cocoa, FL
Well known megalopolis in the USA

3. a major city with its surrounding area
Metropolitan area-
a major city with its surrounding area
Salt Lake City
Denver
Seattle
Atlanta
Minneapolis-St. Paul

4. Minneapolis-St. Paul
Detroit
Seattle
Atlanta
Denver

5. has most of the basic urban functions (Eustis)
    City:
has most of the basic urban functions (Eustis)

6. has some of the urban functions (post office, some commercial in CBD)
Town:
has some of the urban functions (post office, some commercial in CBD)
(Umatilla)

7. few urban functions, little if any CBD
   Village:
few urban functions, little if any CBD
(Altoona)

8. no CBD, may only be a collection of residential uses (Lake Mack)
Hamlet:
no CBD, may only be a collection of residential uses (Lake Mack)