This is the 2618th most frequent Russian word.
тяжелая
Heavy.
In this sentence, the word 'тяжелая' describes the physical weight of the bag.
У неё была тяжелая сумка.
She had a heavy bag.
Here, 'тяжелая' metaphorically describes the smile as expressing difficulty or emotional burden.
Её тяжелая улыбка выдавала грусть.
Her heavy smile revealed sadness.
In this context, 'тяжелая' refers to the music style, often implying intense or hard-hitting sounds.