List of verbs for ActivityStoryActor

Background: We are implementing a new solution between our community and one of our products. One of the APIs we are using is List Activity Story REST Endpoint.

As a part of the response from the API, we get a set of Actors and within the node there is a field called Verb.  Is it possible to get the list of verbs (text) for posts (Add/Reply/anything else?) and for groups (Join/anything else?) 

In the DB, the table te_ActivityStream_StoryActors contains a column with the Verbs but only numbers, we have 7 different ones but we don't know the actual names/values corresponding to those numbers.

Is there a table where we can find the names/values? maybe another API to call?