No, "maintenance" is not a proper noun. It is a common noun that refers to the process of preserving or keeping something in good condition. Proper nouns, on the other hand, are specific names of people, places, or organizations, and they are capitalized.
Pencil proper or common 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.
Exxon is a proper noun
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.
it's a common noun. a proper noun would be Spider-Man.
what is trix
proper
The noun "Dr. Gomez" is a proper noun, the name and title of a specific person. A proper noun is always capitalized.