会 big meeting

No flying KITES at the big meeting!!

The twin cows held a big meeting under the peaked roof.

company ★★★★★
会 (big meeting) + 社 (company) = 会社 (company)

society ★★★★★
社 (company) + 会 (big meeting) = 社会 (society)

conversation ★★★★☆
会 (big meeting) + 話 (conversation) = 会話 (conversation)

a conference ★★★☆☆
会 (big meeting) + 議 (discussion) = 会議 (a conference)

union ★★☆☆☆
協 (cooperate) + 会 (big meeting) = 協会 (union)

a society or association - but usually used about labor unions.