Comunication never undergoes succesfully when the participants of the communication cannot catch the meaning of the message delivered. And almost in all aspects of lives menaing of certain messages plays the very significant roles. In education , meaning will be always a timely issue. Encouraged by the linguist, Tobin who states that no two words can ever mean exactly the same things, a slight differences in meaning can always be found if one looks hard enough , this study is accomplished. The paper examines the usage if and wheter diachronically and synchronically in terms of syntagmatix and paradigmatic relation. To discern the syntagmatic and paradigmatic relation of if and wheter usages in real context, the concordance is utilized to facilitate the analysis.