# Synonyms in Rasa

**URL:** <https://forum.rasa.com/t/synonyms-in-rasa/42033>\
**Category:** Rasa Open Source\
**Created:** [April 2, 2021, 3:34pm UTC](https://forum.rasa.com/t/synonyms-in-rasa/42033 "2021-04-02T15:34:46Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![arushi](https://avatars.discourse-cdn.com/v4/letter/a/d6d6ee/32.png) [@arushi](https://forum.rasa.com/u/arushi)\
**Post date:** [April 2, 2021, 3:34pm UTC](https://forum.rasa.com/t/synonyms-in-rasa/42033/1 "2021-04-02T15:34:46Z")

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I have an entity named ‘OS’. The model is able to extract the entity.

User can write the name of his OS in anyway, lets say mac, macOS, macbook. No matter in whichever the user writes the OS name, I want the value of the entity ‘OS’ as simply ‘Mac’, how can I do this in rasa?

Thanks in advance

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**Author:** ![Johan1us](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.rasa.com/johan1us/32/14245_2.png) [@Johan1us](https://forum.rasa.com/u/Johan1us)\
**Post date:** [April 2, 2021, 8:47pm UTC](https://forum.rasa.com/t/synonyms-in-rasa/42033/2 "2021-04-02T20:47:33Z")

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Hi @arushi,

You can create a synonym in your `nlu.yml`.

For example:

![image](https://europe1.discourse-cdn.com/flex013/uploads/rasa/original/2X/4/4ddb9a1b706ee42b9d37679f6c94bcdbb26cd8ad.png)

You can read more about it here:

> **[NLU Training Data](https://rasa.com/docs/rasa/nlu-training-data/#synonyms)**
>
> Read more about how to format training data with Rasa NLU for open source natural language processing.

I hope this answers your question.

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**Author:** ![arushi](https://avatars.discourse-cdn.com/v4/letter/a/d6d6ee/32.png) [@arushi](https://forum.rasa.com/u/arushi)\
**Post date:** [April 3, 2021, 7:04pm UTC](https://forum.rasa.com/t/synonyms-in-rasa/42033/3 "2021-04-03T19:04:50Z")

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yeah, great. Thanks for the help.

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**Author:** ![Johan1us](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.rasa.com/johan1us/32/14245_2.png) [@Johan1us](https://forum.rasa.com/u/Johan1us)\
**Post date:** [April 4, 2021, 4:20pm UTC](https://forum.rasa.com/t/synonyms-in-rasa/42033/4 "2021-04-04T16:20:10Z")

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@arushi

No problem 😉