"Activate" is an action in Fallout 4.
"Activate" is a generic action used to interact with most objects. The result of the action will depend on the object and the context. For example you activating a drink will cause the player to drink it, activating a food item will cause the player to eat it, etc.
- At the Kitchen in the Protagonist's Home, you can activate the Nuka-Cola Bottles in the fridge to drink them.
- In some cases and contexts, using the action "Activate" will just result in a description or analysis of the item rather than the regular action.