Someone from Israel is called an "Israeli".
IRANIAN is the appropriate national descriptor. However, many Iranians prefer to be called Persians, especially if they live outside of Iran and do not identify with the current regime.
"Park Avenue" is a proper noun, because it is a place. Proper nouns like this should always be capitalized.
Morghan is the same in Farsi and French. The pronunciation of the proper noun -- which references a city in the Iranian province of Shiraz -- will be "mor-gahn" in French.
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.
proper noun
Proper noun
It is a proper noun, because it is the name of a specific thing.
Proper noun or common noun