Currency

7 clues
Money
Money system
Valuable paper
Medium of exchange
Money in accepted use
It's often exchanged at airports
What 15 answers in this puzzle appear on
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Accurrent
Adagency
Adjustinagency
Adoptionagency
Agency
Agencysuitcraft
Aircurrent
Alternatingcurrent
Anncurry
Aoptionagency
Appetency
Ardency
Astringency
Bannedcurry
Beadagency
Bradagency
Britishcurrency
Cashandcurry
Clemency
Cogency