collective

1 : denoting a number of persons or things considered as one group or whole <flock is a collective word>
2 a : formed by collecting : aggregated b of a fruit : multiple
3 a : of, relating to, or being a group of individuals b : involving all members of a group as distinct from its individuals <a collective action>
4 : marked by similarity among or with the members of a group
5 : collectivized or characterized by collectivism
6 : shared or assumed by all members of the group <collective responsibility>

— col·lec·tive·ly adverb