Collocations for region - noun

large
small
entire, whole
distinct, particular, specific
northern, southern, etc.
central
border, far-flung, outlying, peripheral, remote
oil exploration in remote regions of the Russian Far East

neighbouring/neighboring, surrounding
unexplored
geographic (esp. AmE), geographical
arid, coastal, desert, equatorial, mountain, mountainous, polar, subtropical, tropical
Arctic, Gulf, Himalayan, Mediterranean, Pacific, etc.
autonomous
the autonomous regions of the People's Republic of China

metropolitan, urban
rural
populated
a sparsely populated region

economic
developed, industrial
developing
depressed, poor, underdeveloped
the poorer regions of the continent

prosperous, rich
Italy's richest region

oil-producing, etc.
troubled
an attempt to bring peace and stability to a troubled region

inhabit, live in, occupy, populate
Nomads have inhabited this region for thousands of years.

characterize
This tropical forest region is characterized by frequent heavy rainfall.

work in
study, survey
leave
explore, visit
divide sth into
The country is divided into 17 autonomous regions.

confine sb/sth to
This bird is largely confined to the southern regions of the country.

cover sb/sth
The champagne-producing region covers 34 500 hectares.

across a/the region
Sports events across the region have been affected by the weather.

from a/the region
Twenty participants from the Asia-Pacific region will be invited to the seminar.

in a/the region, within a/the region
The animal is found in the northern regions of Sweden.

in the region of (figurative)
She earns in the region of (= approximately) £200 000.

throughout a/the region
The plant is found throughout the western regions of the country.

sth varies from region to region
Sanitary facilities varied widely from region to region.

distinct, particular, specific
abdominal, brain, lumbar, etc.

from a/the region
tissue from the mouth region

in a/the region, within a/the region
cells in a particular region of the brain