"codes" - key terms from Wikipedia

access codes
activation codes
area codes
black codes
block codes
building codes
cheat codes
codes
codes	and standards
codes	are currently
codes	are five digits
codes	are four digits
codes	currently agreed
codes	in part
codes	of ethics
codes	of jewish law
color codes
common short codes
control codes
convolutional codes
country codes
criminal codes
dress codes
emergency codes
football codes
friend codes
hamming codes
holland codes
http status codes
location codes
moral codes
nomenclature codes
orthogonal codes
post codes
postal codes
postal codes	are numeric
postal codes	of canada
publisher codes
q codes
region codes
reserved code elements are codes
reveal codes
short codes
sort codes
sql return codes
status codes
these codes
unlocking codes
vin codes
zip codes