|Spider outside the house|
In photography (as in many things) calling someone a "pro" is a compliment. And to call them an "amateur," is the opposite.
Seemingly, aside from remuneration, "pro" has also come to mean someone who performs with great skill and competence. Yet, confusingly, if you call yourself a "pro," that's not what people understand you to mean. All this is complicated by the fact that photography can be practised as a craft or as art — and by some, both.