The barbell and the weight of the barbell. After adding 40 kg to both sides of the barbell, the weight of the barbell is about 15 kg. So the whole barbell is about 95 kg. Dumbbells are not that heavy, so it feels like this.

Barbell:

Barbell is a core training equipment, which is also used in weightlifting. Barbell is a kind of weight training, which only uses barbell training equipment to improve muscle strength training. You can also use barbells for core training to promote overall coordination.

Dumbbell:

Dumbbell English dumbbell is an auxiliary equipment for weightlifting and fitness. Smaller than a barbell. The weight of light dumbbells is 6,8, 12, 16 lb (1 lb =0.4536 kg) and so on. The weights of heavy dumbbells are100,550,300 kg, etc. Therefore, it is favored by the majority of fitness enthusiasts. Because there is no sound during practice, it is named dumbbell.