co-operation (noun) cooperation: mutual effort
Detalii: cooperation is always positive, collaboration is positive except in wartime (working with the enemy), and collusion is always negative (working together in secret for a dishonest purpose)
Sinonime: blanket, camouflage,
coat, conceal,
cover, curtain, dissemble, dissimulate, dress up, hide, mask, obscure, pretext, screen,
shroud, veil
Antonime: reveal, uncloak, uncover