Amateur and Naif

Amateur noun - A person who regularly or occasionally engages in an activity as a pastime rather than as a profession.

Naif and amateur are semantically related In some cases you can use "Naif" instead a noun "Amateur".

Naif noun - A naive or inexperienced person.

Amateur and naif are semantically related in inexperienced person topic. Sometimes you can use "Amateur" instead a noun "Naif".