Collocations for hay - noun

bale

cut, harvest, make
The freshly harvested hay was taken into the hayloft.
They make hay to feed the cattle in winter.

field (esp. AmE), meadow (esp. BrE)
bale
barn, loft (usually hayloft)
rick (esp. BrE), stack (usually hayrick, haystack)
ride (usually hayride) (= a ride in a tractor)

in the hay
The children were playing in the hay.