Neither.... unless there is some other context like: “her secret was kept demurely, a bride under veils of white lace” that would be a metaphor. throw a “like” in there and you got a simile.
A is although B is because C is unless D is when
The Reign of Terror was a period of violence during the French Revolution emanating from conflicts between the Girondins and the Jacobins. During this period, people perceived to be against the Revolution were publicly executed by guillotine. Both the Jacobins and the Girondins supported the end of the monarchy.
