fork in road / bifurcation / branch in road, river, mountain range etc / to branch off / to turn off / to diverge / to stray (from the path) / to change the subject / to interrupt / to stagger (times)
to flow / to disseminate / to circulate or spread / to move or drift / to degenerate / to banish or send into exile / stream of water or sth resembling one / class, rate or grade