Proper Noun is a noun that is more specific or unique entity than the common noun. Proper Noun always start with capital letters such as London, Abella, and Pluto.
Pluto, Abella, London, English, Roman Catholic, Merriam-Webster and Philippines are examples of Proper Noun.
While those in parenthesis: planet, girl, city, language, religion, website and country are examples of Common Noun.
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