The question what of subject-based commentary and its difference with Quran to Quran commentary

Subject-based commentary is one of the methods more used by commentators in recent decades than before. In this method, commentators may take a Quranic subject on the basis of inter-Quranic or metaphysical fields, or on the grounds of individual and social life. This method differs from that of Quran to Quran. The latter would lead to explanation and deep perception of the meaning of Quranic words or verses. While the former is taken to perceive Quranic message, explain a special point from Quran or infere a Quranic theory or view on a subject.