Customers can easily search for relevant information through keywords. Magento 2 FAQ and Product Questions Extension will automatically select all the Q&A including that word (i.e. auto-suggestions FAQ).

Read this How to Configure Product Question and FAQ Extension to Magento 2 to setup this extension.

Also, you can read this guide on How to Optimize FAQ Page of Magento eCommerce Website to help you get most out of your FAQ Page.