associate
Here are some sentences.The association met last Tuesday.He joined the association.
PBA
AARP
depends what you mean by largest. soccer would be the largest world wide
NBA (National Basketball Association)
Using connected words to make a word-association chain
It's probably neumonoultramicroscopicsilicovolcanoconiosis. No I did not make that up.
NO.
I don’t know
The best-known Appaloosa registry/association is the Appaloosa Horse Club, or the ApHC.
It's from the word 'association' as in 'football association.'It originated in England with Association Football.
associate