yes a day is a common noun
The common noun for the proper noun Presidents' Day is holiday.
The common noun for Sunday is day.
Yes, the noun 'day' is a common, abstract noun. The noun 'day' is a common noun as a general word for a twenty four hour period of time. The noun 'day' is an abstract noun as a word for a period of time, a word for a concept.
The common noun for the proper noun Thursday is day.
day
day
common noun
It is a proper noun, as a Sunday is a specific day. Day would be a common noun, but Sunday or Sundays, its plural form, is a proper noun.
Yes, the noun 'today' is a common noun, a general word the the day it is now.
The common nouns for the proper noun Tuesday are day and weekday.
A common noun for the proper noun Thursday could be "weekday."
The common noun for the proper noun Easter Sunday is either holiday or holy day.