Brownian movement
Charybdis
Maelstrom
action and reaction
advance
angular motion
answer
ascending
ascent
automatic reaction
autonomic reaction
axial motion
back stream
backflow
backflowing
backing
backset
backsliding
backward motion
backward step
backwash
backwate
backwater
bounceback
career
climbing
countercurrent
counterflow
counterflux
course
current
descending
descent
direct tide
downward motion
drift
driftage
ebb
ebb and flow
ebb tide
ebbing
echo
eddy
flight
flood
flood tide
flow
flux
flowing
refluxed
refluxes
refluxing
barometric
efflux
microfarad
oedematous
pre-installed