noun (n)

• someone who is the first to think of or make something(noun.person)

  Synonym:
  discoverer, inventor
  

  source: wordnet30
• a skilled worker who practices some trade or handicraft(noun.person)

  Synonym:
  artisan, craftsman, journeyman
  

  source: wordnet30
• an enlisted man responsible for the upkeep of small arms and machine guns etc.(noun.person)

  Synonym:
  armorer, armourer
  

  source: wordnet30
• An artistic worker; a mechanic or manufacturer; one whose occupation requires skill or knowledge of a particular kind, as a silversmith.(noun)

  source: webster1913