"preferential" - key terms from Wikipedia

common effective preferential	tariff
optional preferential	voting
preferential
preferential	access
preferential	attachment
preferential	ballot
preferential	ballot is preferable
preferential	ballots
preferential	creditor
preferential	looking
preferential	option for the poor
preferential	origin
preferential	procurement
preferential	seating
preferential	selection
preferential	status
preferential	terms
preferential	trade agreement
preferential	trade area
preferential	treatment
preferential	voting
preferential	voting has many variations
saarc preferential	trading arrangement
states and territories providing preferential
territories providing preferential	tax treatment
type of preferential	ballot