* Buddhism: This refers to a specific religion.
* Democracy: This refers to a specific form of government.
* Capitalism: This refers to a specific economic system.
* Renaissance: This refers to a specific historical period.
* Olympics: This refers to a specific athletic event.
* World War II: This refers to a specific historical event.
Key Points about Proper Idea Nouns:
* Capitalized: Like proper nouns for people and places, proper idea nouns are capitalized.
* Specific: They refer to a singular, unique concept or entity.
* Distinctive: They are not generic terms (like "religion", "government", or "event").
Let me know if you'd like more examples!