What is an action?

It works like the suit in a traditional deck of cards. There are four actions: Do, Go, Use, Talk. Imagine that you are in the zombie apocalypse with some friends who are still human, like you. As a member of the group, you propose what to do next: do something, use something, go somewhere or talk to someone. Every one of your friends proposes what to do in a similar way and finally the group decides what to do. You are rewarded if you are able to convince the group to do what you propose and punished if the group decides otherwise.