interchangeablein‧ter‧change‧a‧ble /ˌɪntəˈtʃeɪndʒəbəl $ -tər-/ adjective

- The camera has two interchangeable lenses.
- The terms "sociopath" and "psychopath" are interchangeable.
adjectivechangeableinterchangeablechanged ≠ unchangedchanging ≠ unchangingchangelessnounchangeinterchangeinterchangeabilityverbchangeinterchangeadverbinterchangeably