The term 'quire' is outdated and rarely used in everyday language; understand it for historical or specialized texts. I found an old quire of poems from the 19th century in the attic.
Pro Tip 2/3
Specific Quantity
'Quire' specifically refers to 24 or 25 sheets, so don't use it to mean any small number of pages. I only need a quire, not an entire ream of paper.
Pro Tip 3/3
Quality Consistency
A 'quire' implies sheets are of the same size and quality, important in printing and art. Make sure the quire you bought is suitable for your art project.