Yes, you would say "Chilean."
Chilean
No, "fertile soil" is a common noun because it refers to a general type of soil that is capable of supporting plant growth. Proper nouns typically refer to specific names of people, places, or things.
The proper noun for Jamal is Jamal. It is already a proper noun.
The noun 'gulf' is a commonnoun unless it is the name of a specific gulf.In the term 'gulf countries', the noun 'gulf' is used as an adjective (a function called an attributive noun) to describe the common noun 'countries'.A proper noun is the name of a specific person, place, or thing. For example:Kuwait, Qatar, and Bahrain are PesianGulf countries.China and Vietnam are the Gulf of Tonkincountries.
California is the proper noun. The common noun would be state.
The common noun for the proper noun Kansas is state.
Norway is a proper noun, not an adjective. It is the name of a country. It does not change.
France is always a proper noun it is never a proper adjective (what is a proper adjective? The adjective is french. I like french food
When a proper noun is used as and adjective, it is a proper adjective; for example:Ancient Mexican structures have similarities to ancient Egyptian structures.
Afghan
The proper adjective for Antarctica is Antarctic, as in Antarctic Circle.
England - and + ish = English.
The word 'Buddhistic' is the adjective form of the noun Buddhism.The adjective 'Buddhistic' is a proper adjective; the noun 'Buddhism' is a proer noun. A proper adjective and a proper noun are always capitalized.
A proper adjective is a descriptive word derived from a proper noun.Some examples are:Asia (proper noun) - Asian (proper adjective)Brazil (proper noun) - Brazilian (proper adjective)Canada (proper noun) - Canadian (proper adjective)Elizabeth I (proper noun) - Elizabethan (proper adjective)Sigmund Freud (proper noun) - Freudian (proper adjective)George Orwell (proper noun) - Orwellian (proper adjective)Proper nouns and proper adjectives are always capitalized.
The proper adjective for the proper noun 'Celt' is Celtic.Please note that a proper noun and a proper adjective is always capitalized.
The proper adjective for the proper noun Shakespeare(always capitalize a proper noun) is Shakespearean (always capitalize a proper adjective).
Indonesian is not a noun. It is the proper adjective for the proper noun Indonesia.
The word British is a proper adjective describing a noun as of or from Britain. A proper adjective as well as a proper noun is always capitalized.