Its 20 oz when Hot as Venti means 20 in Italian. Although for cold beverages its 24 oz. Same is for Trenta cup, as Trenta means 30 in Italian. Trenta cup is reserved for cold beverages in Starbucks. Trenta cup = 30 oz cold beverage.
A utility bill would be a bill for your water, electric, gas, etc.
Airway bill is a document, which is a proof of receipt of goods from shipper issued by air carrier. If a freight forwarder or consolidator involved in a shipment, such forwarder issues a document of receipt of goods to the final shipper which is called House airway bill (HAWB).