Is flowers a proper noun or common noun?

The noun 'flowers' is a common noun, the plural form of the noun flower, a general word for any flower of any kind.

A proper noun is the name of a specific person, place, thing, or a title; for example:

  • Dr. David L. Flowers, Pediatrics, Columbus, GA
  • Flowers Street, Seagoville, TX or Flowers Street, Sacramento, CA
  • Flowers Clothing Company, Alameda, CA
  • "Flowers for Algernon", novel by Daniel Keyes