"clearance" - key terms from Wikipedia

atc clearance
clearance
clearance	between
clearance	deficiency
clearance	delivery
clearance	diver
clearance	diving
clearance	diving team
clearance	is required
clearance	limit
clearance	of fires
clearance	of nitrazepam
clearance	required
clearance	search
clearance	store
clearance	will grant the right
creatinine clearance
docetaxel clearance
ground clearance
high ground clearance
ifr clearance
inulin clearance
last call clearance	centers
level of clearance
level of clearance	will grant
medical clearance
mine clearance
operational clearance
promoter clearance
q clearance
red clearance
requested clearance
sample clearance
sample clearance	services
secret clearance
security clearance
security clearance	form
slum clearance
takeoff clearance
tax clearance	certificate
top secret clearance
ultraviolet clearance
valve clearance	compensation
vertical clearance
yankee white clearance