This is the 5099th most frequent Portuguese word.
mochila
Backpack.
In this sentence, 'mochila' refers to a physical backpack used to carry items.
Eu coloco meus livros na mochila antes de ir para a escola.
I put my books in the backpack before going to school.
Here, 'mochila' describes a colorful type of backpack that the person prefers to wear regularly.
Ela sempre usa uma mochila de cor vibrante.
She always uses a backpack with a vibrant color.
In this context, 'mochila' signifies the bag carried during an excursion for practical purposes such as carrying provisions.