Yes, the noun 'cyclone' is a common noun, a general word for any whirlwind type of storm.
A proper noun is the name of a specific person, place, thing, or a title; for example:
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Rust is a common noun.
The noun 'common' is a common noun, a general word for a piece of open land in a town or village for public use; a word for a thing.The noun 'common' is a specific noun for the general noun 'land' or 'area'.
common
Yes, rust is a common noun.
Yes, teaspoon is a common noun.