When I click on "answer," nothing happens. Is there a supervisor? Please contact me. I don't mean to be editing or improving other answers; I just can't find any other way to contribute.
A group of nine is called a nonet; hence, things in groups of nine are nonets.
planets (before Pluto was booted out)
baseball players
Supreme Court justices
worlds in Norse Mythology
The Wu-Tang Clan:RZAGZAOl' Dirty BastardMethod ManRaekwon the ChefGhostface KillahU-GodMasta KillahInspectah Deck
Soda comes in groups of 6
dogs
Pennies
states
what comes in groups of 12
Arms, legs.
rugby teams
Case of beer
gaggle of geese
Inches in a foot
scorpion legs