Yes, "Rex" is a proper noun when it refers to a specific name, such as a person's name or a title (like "King"). Proper nouns are used to name specific people, places, or organizations and are always capitalized. In other contexts, "rex" can be a common noun meaning "king" in Latin, but when used as a name, it is a proper noun.
Exxon is a proper noun
The singular possessive noun is Rex's.
Unless you are using it in a proper noun form, such as "My dog's name is Tyrannosaurus Rex" or "The park is called The T-Rex Playground", it should not be capatalized. It is like the word 'dog'; it names a species, not a specific thing.
Pencil proper or common noun
proper noun
As a name of a road , Park Avenue', it is a proper noun, and both words star with a capital letter. However, when used separately, as 'the park, or 'the avenue', they are common nouns and so not need a capital letter.
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.
it's a common noun. a proper noun would be Spider-Man.
what is trix