G4963–συστροφή–sustrophē

for we are also in peril of being accused of insurrection in regard to this day, there being no occasion by which we shall be able to give an account of this concourse;'

συστροφῆς sustrophēs “commotion”

And day having come, certain of the Jews having made a concourse, did anathematize themselves, saying neither to eat nor to drink till they may kill Paul;

συστροφὴν sustrophēn “a conspiracy”