No, the noun 'rival' is a common noun, a word for any rival of any kind, of anyone.
A proper noun is the name of a specific person, place, thing, or a title; for example:
The word 'rival' is a noun, an adjective or a verb.The noun 'rival' is a word for a person or thing competing with another for the same objective; a competitorEXAMPLESAs a noun: Ours is a stadium without a rival.As an adjective: They are our rival businesses.As a verb: The Thames can rival any European river in beauty.
no
"Park Avenue" is a proper noun, because it is a place. Proper nouns like this should always be capitalized.
Pencil proper or common noun
proper noun
Exxon is a proper noun
Yes, the word 'Ali' is a proper noun, the name of a person.A proper noun is the name or title of a specific person, place, or thing.A proper noun is always capitalized.
proper noun
Proper noun
It is a proper noun, because it is the name of a specific thing.
what is trix
Proper noun or common noun