I don't understand well your question. Are you asking if a collection of natural numbers is a set? If so, then yes because of the definition of a set.
Anyway, English has much more words than Spanish, sois unlikely to be true.(I think in english would be less words, but I dont speak english very good )
Podrías poner tu pregunta en español, así intento traducirla? Porque realmente no entiendo cual es tu pregunta.