cir·cum·stance
/ˈnoun: circumstances
1.
a fact or condition connected with or relevant to an event or action.one's state of financial or material welfare.A situation is a set of circumstances in which one finds oneself. And a circumstance is a fact or condition connected with or relevant to an event or action. To plainly put it, a situation is the thing that's happening and the circumstance is the condition of that thing.