Final answer:
Controlled vocabulary and natural language searches are two approaches to finding information. Controlled vocabulary uses pre-defined terms, while natural language searches use everyday language. Controlled vocabulary searches are more likely to yield relevant results.
Step-by-step explanation:
Controlled vocabulary and natural language searches are two different approaches to finding information. Controlled vocabulary searches use pre-defined terms, such as keywords or subject headings, that are specific and standardized. This helps ensure that search results are relevant and consistent. Natural language searches, on the other hand, use everyday language and whole sentences to search for information. While natural language searches can be more intuitive, they may yield less precise results compared to controlled vocabulary searches.