“nine” in Japanese is 九, read ku, kyuu, kokono (く, きゅう, ここの). It is a Grade 1 Kyōiku kanji, taught in year 1 of Japanese elementary school, and appears in words such as 九つ (nine things).
What does 九 mean?
あめが九つある。
Same sound, different character — the classic trap. Compare them side by side: