What part of speech is “day”
Noun
Definition:
a noun is a word that is used to refer to a person, place, thing, idea, emotion, or phenomenon. 'Day' can be used as a noun to describe a 24-hour period or a certain day (e.g. to describe someone's Monday). The rules for using 'day' in a noun form are fairly straightforward; nouns are almost always preceded by an article such as 'the' or 'a' or other similar words.
Examples:
1. The day was bright and sunny.
2. Monday is the beginning of the work day.
3. I'm always up for a day at the beach.
Tips:
It's important to note that when using 'day' as a noun, it often needs to be pluralized to indicate multiple days (e.g. 'I'm taking three days off this week' instead of 'I'm taking three day off this week').