When a keyword is within another word one can easily find out an answer using the keyword and using keywords can help you focus.
For example, "I don’t know" can be approached by changing into "But I hope you know this later". "I like vegetables smothered in cheese." can be approached by changing into "I enjoy cheese-covered vegetables.".
The primary ideas of a "text, an investigation, a news" article, among other documents, are identified by a "set of concepts" called keywords. This phraseology is typically used to narrow the subject matter of inquiry.
The keywords are used in the changed phrases or sentences that were there in the example.
To learn more about keywords here
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