Dynamics which are typical of (or can be found in) news websites or the life which is typical of schools may thoeretically be described by either possessive constructs such as schools' life or news websites' dynamics, or by the singular noun and adjective school life, news website dynamics. Do both forms have the same meaning? Is one of them better than the other (in general or in particular cases)? My question (unlike this one) is not about firm names, but rather about plural nouns such as "websites", "working places". Should I always use the singular attributive, as in "working place dynamics", "news website dynamics", or "site operators", even while meaning multiple working places or websites?