region

noun 0.661

area code

noun 0.640

country code

noun 0.639

control code

noun 0.606

regio

noun 0.587

subregion

noun 0.577

time code

noun 0.574

code

noun 0.572

codec

noun 0.572

zone

noun 0.567

regional

noun 0.563

dialling code

noun 0.555

colour code

noun 0.546

micro-region

noun 0.537

zip code

noun 0.534

function code

noun 0.534

reg

noun 0.533

subregional

noun 0.528

currency code

noun 0.522

subcode

noun 0.519

postal code

noun 0.518

time zone

noun 0.516

regionality

noun 0.511

coupon code

noun 0.508

subsection

noun 0.506

computer code

noun 0.505