Inventor
Part of speech: noun
Definition: One who invents, either as a hobby or as an occupation.
Example sentence: These are bagpipes. I understand the inventor of the bagpipes was inspired when he saw a man carrying an indignant, asthmatic pig under his arm. Unfortunately, the man-made sound never equalled the purity of the sound achieved by the pig.
Discoverer
Part of speech: noun
Definition: One who discovers; the person who discovered something.