Apr 16, 2018 - 07:03 PM
Both are second person possessives, but tuo is when you are talking to a person you are on familiar terms with about an object which that person possesses. You would use vostro for a situation in which the object is possessed by more people. For example, "il tuo negozio" means "your (own) store" and "il vostro negozio" means "your (plural) store", implying that "this is the store of all of you." In modern conversational Italian, "tuo" is normally used only with a person you know pretty well, but "vostro" can be used in both formal and informal contexts. Hope this helps.