# How to expand query terms using ontology
**URL:** https://discuss.elastic.co/t/how-to-expand-query-terms-using-ontology/146267
**Category:** Elasticsearch
**Created:** [August 28, 2018, 5:27am UTC](https://discuss.elastic.co/t/how-to-expand-query-terms-using-ontology/146267 "2018-08-28T05:27:45Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@amaljose123](https://discuss.elastic.co/u/amaljose123)
#### Post date: [August 28, 2018, 5:27am UTC](https://discuss.elastic.co/t/how-to-expand-query-terms-using-ontology/146267/1 "2018-08-28T05:27:45Z")
i am a beginner in elasticsearch , i am searching for a way , to expand the search terms those provided by a user with the hierarchical information i got from one ontology file . is there any utilities for doing the same ,? any helps are welcome
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### Author:  [@abdon](https://discuss.elastic.co/u/abdon)
#### Post date: [August 28, 2018, 7:08am UTC](https://discuss.elastic.co/t/how-to-expand-query-terms-using-ontology/146267/2 "2018-08-28T07:08:33Z")
Synonyms are a good tool for that. There is a great blog post explaining the approach here: [https://opensourceconnections.com/blog/2016/12/23/elasticsearch-synonyms-patterns-taxonomies/](https://opensourceconnections.com/blog/2016/12/23/elasticsearch-synonyms-patterns-taxonomies/)
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [September 25, 2018, 7:08am UTC](https://discuss.elastic.co/t/how-to-expand-query-terms-using-ontology/146267/3 "2018-09-25T07:08:54Z")
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