Arabic stemmer and synonymous

Hello everyone, I am doing a comparison between Elasticsearch and Apache Solr in handling the Arabic language
and I know that Solr use light 10 stemmer and doesn't have synonymous for Arabic, I see this answer " Elasticsearch uses the snowball Arabic stemmer" about the stemmer but I don't find anything in the documentation so I am not sure.
what is the stemmer and does it have synonymous for Arabic?

Have you seen this link? https://www.elastic.co/guide/en/elasticsearch/reference/5.6/analysis-lang-analyzer.html#arabic-analyzer

It shows the available arabic components are used to create the arabic analyzer.

Hope that helps!

--Alex

Thank you for your reply,
yes I have seen it but it doesn't mention information about the stemmer source

If you need to get more information, you best bet is either the lucene java doc on the arabic analyzer and stemmers or directly their source,

https://lucene.apache.org/core/7_1_0/analyzers-common/index.html

Hope this helps!

--Alex

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