what are facets and buckets with relation to querybuilder?

[TB3dock]

there are some references to facets and buckets with relation to using querybuilder to search through the content tree.  What are facets, when and how should they be used?

[shelly-goel]

@TB3dockThere's a similar post for facets and buckets, hope this would be useful to you.

https://experienceleaguecommunities.adobe.com/t5/adobe-experience-manager/optimized-query-builder-qu...