Biaural is a term commonly used to describe something that is heard through two ears. However, there are several synonyms that can be used in place of "biaural" to describe the same thing. One such synonym is "stereo," which is often used to describe audio that is heard through two channels or speakers. Another synonym is "binocular," which is used to describe vision that is perceived through two eyes. "Bilateral" is also used to describe something that occurs on both sides, like hearing in both ears. Other less commonly used synonyms for biaural include "dual-auditory," "double-audio" and "two-eared." Regardless of which synonym is used, they all describe the same basic concept of sound perceived through two ears.