The word "sadness" is a common noun.
A proper noun is the name of a person, place, thing, or a title. A proper noun for the common noun sadness is:"The Edge of Sadness" by Edwin O'Connor"Sadness in the Night" by Tarja Turunen
No sadness is not proper nounSadness is common noun
happiness and sadness are emotion that's the only thing they have in common.
sadness is a common emotion
sadness
Yes, sadness and pain are two of the more common reasons that people have tears.
"Park Avenue" is a proper noun, because it is a place. Proper nouns like this should always be capitalized.
proper
Common
common and proper
common