Hanukkah is a proper noun.
Hanukkah can be used as an adjective or a noun.
Hanukkah is observed for eight nights and days.
No, it is a proper noun. It is a Jewish religious holiday (calendar date varies).
Perhaps you mean 'Hanukkah' (also spelled Hanukah or Chanukah), the eight-day Jewish festival of lights, which is a proper noun, the name of a specific holiday.
"... and Happy Hanukkah!"
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.
Pencil proper or common noun
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.
There are several ways to spell out the Anglicized version of the Jewish holy day. Most common are Hanukkah and Chanukah (CH pronounced as H).(see related question and link)