2 adjectives to describe nomadism

It is a fact, however, that pure pastoral nomadism is exceptional, that normal pastoral nomads have always added a little farming to their cattle-breeding, in order to secure the needed additional food and above all fodder, for the winter.

It is a fact, however, that pure pastoral nomadism is exceptional, that normal pastoral nomads have always added a little farming to their cattle-breeding, in order to secure the needed additional food and above all fodder, for the winter.

2 adjectives to describe  nomadism