Synonyms for Collective (same or very similar meaning)
WordNet sense 1 (united or combined):
joint
WordNet sense 2 (done by or characteristic of individuals acting together):
corporate
WordNet sense 3 (gathered or tending to gather into a mass or whole):
aggregate, aggregate
WordNet sense 4 (advocating or following the socialist principles):
socialist, socialistic
From the ODE community, based on WordNet
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