W: (n) circulation [Related to: circulate] (the spread or transmission of something (as news or money) to a wider group or area)
W: (n) circular [Related to: circularise] (an advertisement (usually printed on a page or in a leaflet) intended for wide distribution) "he mailed the circular to all subscribers"
W: (n) dissemination [Related to: disseminate] (the act of dispersing or diffusing something) "the dispersion of the troops"; "the diffusion of knowledge"
S: (v) change, alter, modify (cause to change; make different; cause a transformation) "The advent of the automobile may have altered the growth pattern of the city"; "The discussion has changed my thinking about the issue"