No, the word 'smiled' is the past participle, past tense of the verb to smile. The past participle of the verb also functions as an adjective.
Examples:
He looked up and smiled at her. (verb)
Her smiled response made him hopeful. (adjective)
The word 'smile' is both a noun (smile, smiles) and a verb (smile, smiles, smiling, smiled)
The common noun is museum; the proper noun is May.
In the sentence, 'Music can express sad or happy feelings.' there are no proper nouns or proper adjectives. The noun music is a common noun for any music; the noun feelings is a common noun for anyone's feelings. The adjectives sad and happy are not proper adjectives.
The word banana is a noun, a common noun. When used as an adjective, as in banana bread, it is not capitalized. Any common noun can become a proper noun if it is used for the name of someone or something, such as the movie 'Bananas' (1971) or Banana Republic brand.
If by common you mean not proper, yes. A proper adjective is one that is derived from a proper noun and is capitalized regardless of its placement in a sentence.
You could say "holiday," but there isn't a specific common noun for Thanksgiving.
"Park Avenue" is a proper noun, because it is a place. Proper nouns like this should always be capitalized.
Common
It is a proper noun, because it is the name of a specific thing.
proper
Proper noun
it's a common noun. a proper noun would be Spider-Man.
Pencil proper or common noun
Proper noun or common noun
The noun cassette is a common noun.
a common noun?
The answer is proper noun. Examples of common noun and proper noun are: Proper noun: Mary Collins Common noun: monkey
Camel is a common noun.