Layperson
Part of speech: noun
Definition: one who is not formally trained in a given subject or profession
Layman
Part of speech: noun
Definition: layperson, someone who is not an ordained cleric or member of the clergyby analogy, someone who is not a professional in a given fielda common persona person who is untrained or lacks knowledge of a subjecta generally ignorant personlay-sister or lay-brother, person received into a convent of monks, following the vows, but not being member of the order
Example sentence: There's something very satisfying about old cameras because they're ingenious. I mean when you take them apart and actually see, 'Oh, this is how we make photographs,' it's an ingenious thing, but it feels like it's in a way a layman can appreciate, whereas a digital camera, I don't even begin to know what goes into making a digital camera.