Apart from the major difference between suit and tuxedo , there are other differences that cut across several factors. Other differences would extend to the formality of the event, the purpose, and the time of the day.
The Major Difference Between Suit and Tuxedo
The major difference between a suit and a tuxedo is satin. In a suit, the fabric used in making the lapel is the same as the rest of the cloth. The fabric used in making the lapel of a tuxedo is satin.
Beyond the lapel, a tuxedo has other satin details. The buttons and stripes on a tuxedo are also in satin. It is unlike the suit that has the same fabric throughout.