Term variation is the coexistence of two or more linguistic forms that designate the same, or substantially the same, specialized concept within a domain of discourse ^[1]. It may involve formal differences in term structure, such as abbreviation, derivation, inflection, lexical substitution, or changes in syntactic form, and may also arise through differences among languages, communicative situations, expert communities, or levels of specialization ^[1][2]. Term variation therefore concerns the relationship between alternative designations and a shared conceptual referent, whereas conceptual variation concerns differences in how the underlying concept is structured or understood ^[2][3]. It is regarded as a normal feature of specialized communication rather than simply as terminological inconsistency, although its identification requires contextual and conceptual analysis ^[2][3]. In computational terminology, recognizing variants supports terminology extraction, information retrieval, and knowledge organization ^[1].