Which is not listed as a term type produced by keyword expansion?

• A. Highly Correlated Terms
• B. Synonyms
• C. Strongly Related Terms
• D. Abbreviations

Answer: (D)

Keyword expansion broadens a seed term by pulling in terms that reflect how people search and discuss the topic. The common outputs are synonyms (terms that have the same or very close meaning), strongly related terms (concepts that are closely linked and often appear in the same context), and highly correlated terms (terms that statistically co-occur with the seed in data). Abbreviations, on the other hand, are shorthand forms of a term rather than distinct semantic variants generated by expansion. They aren’t typically listed as a term type produced by keyword expansion, so they’re not included in the standard expansion outputs. For example, with a seed like car insurance, you’d see synonyms such as auto insurance, strongly related terms like car policy, and highly correlated terms like cheap car insurance, but abbreviations like CI wouldn’t be a primary term type in this expansion list.