The number of flat objects (sheets, tickets, plates, etc.); a count of how many pieces.
写真の枚数を教えてください。
Please tell me how many photos there are.
プリントは全部で10枚あります。枚数を確認しましたか？
There are 10 prints in total. Did you check the number of sheets?
チケットの枚数に応じて割引があります。
There are discounts depending on the number of tickets.
In sumo, the difference between wins and losses that affects a wrestler's ranking.
三日目で枚数が偏ると番付に影響します。
If the win-loss difference skews by the third day, it will affect the ranking.