An Usage Measure Based on Psychophysical Relations

It is accepted to rank words on absolute (or proportional) frequency, when making frequency lists of words, occuring in the texts. At the same time, the researchers, feeling imperfection of frequency as unconditional indicator of word "importance", consider also other characteristics of usage for revealing the basic zone of frequency list, for example the range, i.e. the number of categories, in which the word occured at least once.