This paper deals with the problem of harmonization of linguistic terminology, in particular of that related to prepositional equivalents of the word. It is assumed on the basis of a number of linguistic facts
that different languages undergo similar development processes, which results in arising of transitional language units in such languages. The analysis of linguistic terminology used to designate such phenomena
has revealed a correlation between the terms in many languages used by various scholars. The author suggests unifying and harmonizing such terminology by referring to the respective items as “prepositional
equivalents of the word”.