circulation

Free movement or passage (as of cytoplasm within a cell or sap through a plant).

“ocean circulation is an important part of global climate”

“a fan aids air circulation”

(library science) the count of books that are loaned by a library over a specified period.

Movement through a circuit; especially the movement of blood through the heart and blood vessels.

Number of copies of a newspaper or magazine that are sold.

“by increasing its circulation the newspaper hoped to increase its advertising”

The dissemination of copies of periodicals (as newspapers or magazines).

The spread or transmission of something (as news or money) to a wider group or area.