"billing" in the noun sense
1. charge, billing
request for payment of a debt
"they submitted their charges at the end of each month"
"billing" in the verb sense
1. charge, bill
demand payment
"Will I get charged for this service?"
"We were billed for 4 nights in the hotel, although we stayed only 3 nights"
2. bill
advertise especially by posters or placards
"He was billed as the greatest tenor since Caruso"
3. placard, bill
publicize or announce by placards
Source: WordNet® (An amazing lexical database of English)
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