I don't know how to explain it generally.. but lets make an example for it
My site have many different webpages that i specifically target it for certain keyword.. if one those webpages being slap or throw away by google.. will it effect another one?
webpages A - still good in ranking
webpages B - still the same
webpages C - being slap and throw away or punish by SE.. maybe due to blasting thousand of link per day
So if webpages C is being punished.. will it effect another webpages ranking also? or google look it as different entity of campaign?