number of long, cylindrical things; count of items counted with 本
Used for the count of objects typically counted with the counter 本 (ほん), such as pencils, bottles, trains, movies, and home runs. Not a general word for 'number'.
See also: 本
Please count the number of pencils in this box.
The number of trains running per day is large.
The number of train services has decreased.
This bus route has few services.
I counted the number of cigarettes in stock.
Thanks to quitting smoking, the number of cigarettes decreased.