WordNet sense 1 (a state of uncertainty about what should be done (usually following some important event) preceding the establishment of a new direction of action):

state of flux

WordNet sense 2 (the lines of force surrounding a permanent magnet or a moving charged particle):

magnetic field, magnetic flux

WordNet sense 3 (a flow or discharge):

fluxion

WordNet sense 4 ((physics) the number of changes in energy flow across a given surface per unit area):

flux density

WordNet sense 5 (move or progress freely as if in a stream):

flow

WordNet sense 6 (become liquid or fluid when heated):

liquefy, liquify

WordNet sense 7 (mix together different elements):

blend, coalesce, combine, commingle, conflate, fuse, meld, merge, mix, immix, combine