A group of words sharing the same root, such as politics, politician, political, belongs to which concept?

• A. Word family
• B. Lexical set
• C. Compound adjective
• D. Cataphoric reference

Answer: (A)

Words that share the same root form a word family. When you take a base or stem and add different endings or prefixes, you get related words that stay tied to that core idea. Here, politics, politician, and political all come from the same root related to governance, and each one extends the base in a different way. That makes them a word family—the same root generating related terms. By contrast, a lexical set groups words by meaning, not by their morphological root; a compound adjective is a specific form created by combining words; and a cataphoric reference is a discourse device that points forward to something mentioned later.