I have created a restaurant bot using python using some Training Data(common\_Examples). Till now it's fine, but there are many intents with some similarity. 

While i'm going through the RASA\_NLU site, I have recognized a number of entity\_synonyms that could be useful. I can't seem to find any examples on the web. Specifically, I'm looking for example usage or material on entity\_synonyms. Any help would be appreciated.