SUMMARY
Synonymy and search synonymy in an IR system (on the basis of linguistic terminology and the iSybislaw system)The paper focuses on some problems of synonymy in the linguistic terminology and solutions for the optimal representation of information in the structure of an IR language. Linguistic terms in addition to metalinguistic meaning also carry some meta-scientific information (e.g. on the methodological school). It is thus possible that two different terms refer to the same linguistic phenomenon within various research trends. The issue of usage is also addressed here (including idiolectal preferences). The above phenomena on the one hand and various user information needs on the other result in some significant difficulties in the work on the optimization of IR in iSybislaw.