what is meaning of the word amateur?

Question

when i view some sexual picture,ofen see this word.but i don't know the exact meaning.
pls tell me!

Answer 1

They are not skilled and do not do it for a living.

Answer 2

Amateur are people who are not skilled.

In the pornagraphy industry, there is professional actors who act out porn movies. However, amateurs are people who have no porn acting talents. They just entirely rely on their own instincts.

Answer 3

in that context, (true or not) it means the actors are not paid or they don't do adult films for a living