interchangeable

/ˌɪntət‍ʃˈe‍ɪnd‍ʒəbə‍l/

/ˌɪnɝˈtʃeɪndʒəbəɫ/, /ˌɪntɝˈtʃeɪndʒəbəɫ/

interchangeable

capable of being used or exchanged in place of one another

(mathematics, logic) such that the arguments or roles can be interchanged

Examples

1. So the receiver of the gun, the body of the gun, is interchangeable.

2. The soft tips are interchangeable.

3. The roles of mom and dad are interchangeable.

4. Those terms are interchangeable.