Collocations for half - noun

first, second | last, latter
in the latter half of the nineteenth century

top, upper | bottom, lower
the lower half of the window

front | back, rear
the rear half of the car

left, right
the left half of the brain

northern, western, etc.
the northern half of the country

by a ~
Costs rose by a half.

in ~
We divided the money in half.

in the … ~
He played well in the second half of the match.

~ of
the first half of the concert Over a half of all accidents happen in the home.

about/almost/at least/over a half
Over a half of all the people interviewed said they were disappointed in the government.

half and half
We split the work half and half.

one/two/three, etc. and a half
She''s four and a half years old now.