[bobjenkins]

Originally Posted by irmamar

I agree with you both. "Ayudar" is more common than "auxiliar", though "auxiliar" is used above all when there is a sort of accident or someone is hurt or even lost, in the mountain or in the forest, for instance.

Auxilar is also an adjective:

Haber es un verbo auxiliar.

Or a noun:

Cuando vas en avión ya no puedes llamar a la azafata, sino al auxiliar de vuelo.

Buena información Irmamar gracias