/ ˌɪntəˈtʃeɪndʒəbl; NAmE -tərˈtʃ-/ adjective
interchangeable (with sth) that can be exchanged, especially without affecting the way in which sth works :
The two words are virtually interchangeable (= have almost the same meaning) .
The V8 engines are all interchangeable with each other.
► inter·change·abil·ity / ˌɪntəˌtʃeɪndʒəˈbɪləti; NAmE -tərˌtʃ-/ noun [ U ]
► inter·change·ably adverb :
These terms are used interchangeably.