Common noun
The common noun for the proper noun Easter Sunday is either holiday or holy day.
It is neither: it is a proper noun for a holiday.(In 'Easter Sunday' it is a noun adjunct with the proper noun Sunday.)
"Park Avenue" is a proper noun, because it is a place. Proper nouns like this should always be capitalized.
It is a proper noun, because it is the name of a specific thing.
proper
The common noun for the proper noun Easter Sunday is either holiday or holy day.
The noun 'Easter Island' is a proper noun, the name of a specific place.
The common noun for the proper noun Easter Sunday is either holiday or holy day.
It is neither: it is a proper noun for a holiday.(In 'Easter Sunday' it is a noun adjunct with the proper noun Sunday.)
"Park Avenue" is a proper noun, because it is a place. Proper nouns like this should always be capitalized.
It is a proper noun, because it is the name of a specific thing.
proper
Proper noun
Yes, Easter is a singular, proper, abstract noun; the name of a specific celebration.
Pencil proper or common noun
it's a common noun. a proper noun would be Spider-Man.
Proper noun or common noun