mots occurence ... id_formation source_field 0 startup 1 ... \nlever-des-fonds-pour-ma-startup\n-2 title 1 fond 1 ... \nlever-des-fonds-pour-ma-startup\n-2 title 2 lever 1 ... \nlever-des-fonds-pour-ma-startup\n-2 title [3 rows x 5 columns]