Understanding terminology of kibana keyword

Elastic Stack Kibana
1

When I upload data to ES, kibana is displaying it as item and item.keyword

Any autocomplete is also not working.

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2

Hello,

If you don't set the mapping in elasticsearch explicitly - then es does it for you.
This is how it sets the keyword mapping:
https://www.elastic.co/guide/en/elasticsearch/reference/current/dynamic-mapping.html
https://www.elastic.co/guide/en/elasticsearch/reference/current/keyword.html
Kibana is just pulling that data out of json and displaying the fields here.

Hope this helps.

Thanks,
Bhavya