• 一番いちばん — number one / first
• 番号ばんごう — number / serial number
• 順番じゅんばん — order / sequence
• 番組ばんぐみ — TV program
• 番人ばんにん — guard / watchman
• 番犬ばんけん — watchdog

This kanji originally referred to guarding rice fields. Over time, it came to mean turns, assignments, or numbers in sequence — all tied to the idea of order and role.

次つぎは 私わたしの番ばんです。
The next is my turn now.

番犬ばんけんが家いえを守まもっています。
The watchdog is guarding the house.