This is the 9391st most frequent Portuguese word.
coletivas
"Coletivas" means "collective" or "group-related" in English.
Here, 'coletivas' is used as an adjective describing 'activities' to imply they are group-based, involving several participants.
Organizamos várias atividades coletivas na escola.
We organized various collective activities at school.
In this sentence, 'coletivas' serves as an adjective modifying 'decisões' to indicate shared or group decisions rather than individual ones.
As decisões coletivas foram fundamentais para o sucesso do projeto.
The collective decisions were fundamental for the project's success.
'Coletivas' in this context describes 'obras,' suggesting that these are works created collaboratively by multiple contributors.