Traditionally, functioning of major classes of lexical items is described as follows. Nouns prototypically function as arguments, but can also serve as predicates and attributes; verbs are normally used as predicates, but can also appear for arguments and attributes; and adjectives are categorically attributes, while secondary they can be used as predicates. The question arises, whether adjectives can serve as arguments (and how). The answer is, undoubtedly, “yes”, they can. When an adjective is used without a head, it begins to function as a noun. The current research aims to describe the morphological behaviour of such nominalised adjectives in the East Caucasian languages. The study of 31 grammatical descriptions of these languages, based on the analysis of nominalised adjectives, reveals 5 groups of the East Caucasian languages.

传统上，主要类别的词汇项的功能描述如下。名词典型地用作自变量，但也可以用作谓语和属性。动词通常用作谓语，但也可以出现在参数和属性中。形容词和形容词是绝对属性，而次要形容词可以用作谓语。问题是，形容词是否可以作为论据（以及如何）。毫无疑问，答案是肯定的。当形容词不带头部使用时，它就开始充当名词。当前的研究旨在描述东方高加索语中这种名词化形容词的形态学行为。在对名词化的形容词进行分析的基础上，对这些语言的31种语法描述进行了研究，结果发现有5组东方高加索语言。