# Elasticsearch - Search synonyms in attachment content
**URL:** https://discuss.elastic.co/t/elasticsearch-search-synonyms-in-attachment-content/157404
**Category:** Elasticsearch
**Created:** [November 19, 2018, 4:45pm UTC](https://discuss.elastic.co/t/elasticsearch-search-synonyms-in-attachment-content/157404 "2018-11-19T16:45:25Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@alina.frey](https://discuss.elastic.co/u/alina.frey)
#### Post date: [November 19, 2018, 4:45pm UTC](https://discuss.elastic.co/t/elasticsearch-search-synonyms-in-attachment-content/157404/1 "2018-11-19T16:45:25Z")
I would like to get some guidance on how to search for synonyms in the attachments content, in C#.
- Using ingest-attachment plugin.
- Elasticsearch version: 5.5.1
- NEST: 5.5
I am receiving results when searching for words within the attachments, but I don't know how to use the synonyms on the attachments.
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### Author:  [@Jaspreet\_Singh](https://discuss.elastic.co/u/Jaspreet_Singh)
#### Post date: [November 20, 2018, 9:26pm UTC](https://discuss.elastic.co/t/elasticsearch-search-synonyms-in-attachment-content/157404/2 "2018-11-20T21:26:25Z")
You have a very broad query, so how about you check this out - [https://www.elastic.co/guide/en/elasticsearch/guide/current/synonyms.html](https://www.elastic.co/guide/en/elasticsearch/guide/current/synonyms.html).
This should give you good overview of how to go about using synonyms. Let me know if you have specific questions.
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [December 18, 2018, 9:26pm UTC](https://discuss.elastic.co/t/elasticsearch-search-synonyms-in-attachment-content/157404/3 "2018-12-18T21:26:28Z")
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