This is the 1833rd most frequent Russian word.
носить
To wear or to carry.
This sentence describes the action of wearing something, associating 'носить' with clothes.
Я люблю носить удобную одежду.
I love wearing comfortable clothes.
Here 'носить' is used to mean regularly carrying or delivering items, in this case, letters.
Почтальон носит письма каждый день.
The mail carrier delivers letters every day.
In this sentence, 'носить' expresses the idea of carrying an object with oneself habitually.