Overview 

A keyword query, also known as a keyword search or keyword-based search, retrieves relevant information by using keywords or key phrases.

To detect intents and/or entities, you can create keyword queries that check for the presence or absence of certain keywords

Keyword Matcher Query in Entity

To enable a bot to understand a customer's request to block their debit card, it is necessary to define the relevant entity. This entity can be defined to match keywords such as "debit," "visa," or "master," while excluding the keyword "credit.”

Keyword Matcher Query in Intent

Similarly, the "Card Closure" intent may heavily feature words like "close" or "closure," which could potentially lead to misclassification when discussing account closure. To address this issue, use keyword-based filtering to prevent predicting the "Card Closure" intent when the word "card" is absent or the word "account" is present.