 A pair of related terms with the same syntactic and semantic features, which also become technical terms in Indian logic, are the terms subject-like (sa-pakṣa), or similar to the subject, and subject-unlike (vi-pakṣa), or dissimilar to the subject. The Sanskrit prefixes, sa- and vi-, and the English adjectives, like and unlike, which are also English prepositions, express the relation of similarity and dissimilarity respectively.