Lecture classification of comparative typology according to dr. Buranov

Typological classification is … “opposed to genealogical classification and is bound to classifying languages according to their taxonomic/systemic features and defining structural types of languages” (K.Solntzev).
Morphological or Typological classification deals with the classification of lan­guages according to their structural features or types in language instead of the genealogical origin.
An example of a typological classification is the classification of languages based on the order of the verb, subject and object in a sentence into several types: SVO, SOV, VSO, and so on, languages. (English, for instance, belongs to the SVO lan­guage type.)
Ethalon language is an object language for ComparativeTypology and it is also a means or system of tools to compare languages. It is usually identified deductively. The notion of etalon language was introduced by Boris Uspensky.
Some scholars prefer the term meta language which is to a certain extent synonymous to ethalon language. It is the second major function of the ethalon language to serve an instrument of comparison. This instrument may be represented as fol­lows:
any natural language (usually one's native tongue); a linguistic category, for example, gender, voice, person, sex, etc; concept; field.
Below there are some more examples of ethalon language:

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  specially created artificial language;
  
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  an existing language with thewell-developed system;
  
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  certain sign system;
  
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  certain linguistic method;
  
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  phonetic, morphological, syntactic or other models;
  
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  intermediary language;
  
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  the language of translation, etc.
  

For applied purposes, etalon language is classified into minimal and maximal.
The typological theory defines common linguistic notions used in Comparative Typology. The typological theory is used to define language isomorphism (common features) and allomorphism (differentiating signs).