something that is protected against something else is safe from that something else
safe is box. protecting_oneself_from_predators is protectingoneself. safe_house is tangible_thing. authentication_protected_thing is restricted_thing. dangerous_thing is dangerous_thing. safeguard is protecting. dangerous_thing is tangible_thing. protecting is helping. biometrically_protective_thing is authentication_protected_thing. password_protective_thing is authentication_protected_thing.