Defining the main sense of synonymy (#1) precisely is difficult. Lexical synonymy can be considered polysemous; since synonymy is relative, linguists distinguish between absolute synonymy and partial synonymy, and many consider synonyms on a spectrum which has no agreed-upon scale. Partial synonymy itself encompasses multiple types of synonymy, with different names and definitions depending on the analytical framework, such as cognitive synonymy, descriptive synonymy, full synonymy, complete synonymy and total synonymy. For more information, see the Further reading section.
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