Compounding is two-words combined together.

• A. Affixation
• B. Borrowing
• C. Descriptivism
• D. Two-words combined together

Answer: (D)

Compounding is the process of creating a new word by joining two or more words. That exact idea—two words being combined to form one new word—is what this choice is capturing, making it the precise definition of compounding. For example, sun + flower gives sunflower, and key + board gives keyboard.

Affixation describes adding prefixes or suffixes to a base word (like happy → unhappy or happiness), not two words simply joined. Borrowing is when a word comes from another language, like ballet from French. Descriptivism is a linguistic approach to studying language, not a word-formation method. So the phrase “two-words combined together” matches the concept of compounding exactly.