九つ・９つ|ここのつkokonotsu[2]nakadaka (mid-high)

1. numeralnine
   太陽たいようをまわる惑星わくせいは９つもあり、地球ちきゅうもその１つである。↗

   There are nine planets travelling around the sun, the earth being one of them.
2. nounnine years of age
3. nountwelve o'clock (old time system)

• Synonym九きゅうNeutralNeutral in register and the default in most modern contexts — arithmetic, dates, phone numbers, prices, time expressions. For counting objects or giving the age nine, the native numeral 九つ is used.

Use 九, the neutral Sino-Japanese numeral, in most modern contexts such as arithmetic, dates, and prices; use 九つ, the native form, for counting objects and for the age nine.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 個数こすうが9個こ又または順番じゅんばんが9番目ばんめであること。
2. 9歳さい。