It really depends on what your talking about.
Circulation means to go in a circle.
So you could be talking about your blood "circulating" through your body.
A dictionary link below will help you out abunch.
a process that distributes and circulates water(two words)
It circulates to your brain, but it circulates from your heart.
CURRENCY
Heart
circulates the water
veins
Choroid plexus, lined with ependymal cells. The CSF circulates through the four ventricles.
Because it circulates blood.
circulates blood
Blood...
In Englishman named William Harvey was first to describe that blood circulates by blood vessels.
The first scientist to describe that the heart circulates blood was the Arabian physician Ibn al-Nafis, in 1242 AD.