Is places a proper noun?
No, the plural noun 'places' is not capitalized unless it is the first word in a sentence. The noun 'places' is a common noun.
The names of places are always proper noun. Proper nouns are always capitalized.
common noun - park
proper noun - Yosemite National Park
common noun - neighborhood
proper noun - Greenwich Village (in Manhattan, New York City)
common noun - city
proper noun - San Francisco
common noun - country
proper noun - India
No, capitalization is not what forms a proper noun. There are some proper nouns that do not use capital letters (m&m's for example) and far too many people that capitalize incorrectly. A capital letter does not make it a proper noun. What determines that a noun is a proper noun is what the word is for. A proper noun is the name of a specific person, place, or thing. The noun "m&m's" is the name…