1.
~ combines with nouns referring to places to mean something positioned or existing mainly in the place mentioned, or operating or organized from that place.
...a Washington~ organization.
...land~ missiles...
COMB in ADJ
2.
~ combines with nouns to mean that the thing mentioned is a central part or feature.
...computer~ jobs.
...oil~ sauces.
COMB in ADJ
3.
~ combines with adverbs to mean having a particular kind of basis.
There are growing signs of more broadly~ popular unrest.
COMB in ADJ