interchangeablepick
adjectiveUK /ˌɪntəˈtʃeɪndʒəbəl pɪk/
US /ˌɪntərˈtʃeɪndʒəbəl pɪk/
Something you can swap with another thing and it still works the same.
The two puzzle pieces are an interchangeable pick, so either one fits here.
RELATED WORDS
OTHER MEANINGS
2. A selection that can be traded for another without changing the result.
For dessert, the apple or the orange is an interchangeable pick.
3. A player who can be swapped into the game in place of another.
The coach said the backup goalie is an interchangeable pick for the starter.
4. A tool or part that can be used in place of another of the same kind.
These drill bits are an interchangeable pick, so any of them will work.