It may be that they are a noun and an adjective, which as a phrase here would be out of place, but it seems to me that the second is a clarification so as not to confuse the former with a musical instrument. See tuba ("alcoholic fermentation of palm sap"), drink ("liquid to drink", "feminine to drink").
* Only one "like" per meaning and day, the more "likes" the meaning will appear higher in the list
