Which of the following is a compound word?

• A. Washing Machine
• B. Table Tennis
• C. Orange Juice
• D. Mother In Law

Answer: (A)

A compound word is formed when two or more words are joined to create a single noun with its own meaning. In washing machine, the word washing describes the action, and when combined with machine it names one specific appliance used to wash clothes. That pairing is treated as a single unit in everyday language, which is what makes it a compound word. The other options describe things with two separate words (table tennis, orange juice) or a hyphenated form (mother-in-law) rather than a single, unified word. So the example that best fits the idea of a compound word is washing machine.