Billing queries?

Supercat"bills queries".What's this and what do they do?

They answer questions about invoices and invoicing—customer complaints about those, mostly, I suppose.

SupercatThey say that it "bills queries".

That is unnatural to me. 'Bills' is a noun, and I would expect "They call it 'Bills queries'".

Thank you! Yes, the service desk they call must be almost equal to helpdesk. I forgot details, though the sentence is listing jobs covered by the service desk. As far as I remember it says: FAQ, customer complaints, and "billing queries".
(I remember it says billing queries, so sorry 5JJ that the question lacks information.)

fivejedjonThey call it 'Bills queries'"

'Billing' or 'bill' in AmE. We don't pluralize the noun as adjective.

It's the same in BrE. I missed that.

ps. I consider 'Bill' to me a noun functioning as a modifier there, not an a

fivejedjonnoun functioning as a modifier there, not an adjective.

What's the difference between that and my 'noun as adjective'?

Aw aw, it's written as "billing queries" (gerund + queries). I guess the writer is listing, so he needs to make it into a noun phrase.

Mr M,

It's not important for someone learning to communicate in English. For a student of grammar/linguistics, it is important to distinguish between form and function. Both nouns and adjectives can function as modifiers of nouns. On/y adjectives can be moddied by adverbs such as 'very' (*very bill) or have comparative/superlative forms ('biller/*billest, *more/*most bill