SYNONYMOUS

adj. Often, synonymous with or to. equal (to), equivalent (to), tantamount (to), identified (with), corresponding (to or with); transposable (with), exchangeable (with), identical (to or with), interchangeable (with), the same (as) A word is almost never truly synonymous with another in all respects Even terms like 'salt' and 'sodium chloride' are not synonymous.