trainer (n.)

• breaker
• breeder
• broncobuster
• buckaroo
• cattleman
• coach
• cowman
• dairyman
• equerry
• farrier
• forerunner
• grazier
• groom
• handler
• horseshoer
• hostler
• instructor
• mentor
• pathfinder
• rancher
• sheepman
• stableboy
• stableman
• stockman
• tamer
• teacher
• trailblazer