These nouns refer to ideas or concepts. Freedom, love, hate, eduation are all abstract nouns. John is my friend. Answer John is a Proper noun. Answer Friend is a common noun.
Money is power.
Answer Money is a noncount noun. Answer Power is an abstract noun. A pronoun is a word used in place of a noun. The pronoun substitutes for a specific noun, called its antecedent. When Bing came home, he ate two sandwiches.