Definition of interchangeable adjective from the Oxford Advanced American Dictionary

 

interchangeable

 adjective
adjective
NAmE//ˌɪntərˈtʃeɪndʒəbl//
 
 
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that can be exchanged, especially without affecting the way in which something works The two words are virtually interchangeable (= have almost the same meaning). interchangeable with something The V8 engines are all interchangeable with each other.
interchangeability
 
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NAmE//ˌɪntərˌtʃeɪndʒəˈbɪlət̮i//
 
noun [uncountable]
interchangeably
 
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NAmE//ˌɪntərˈtʃeɪndʒəbli//
 
adverb These terms are used interchangeably.
See the Oxford Advanced Learner's Dictionary entry: interchangeable