coach

noun:a person who trains and directs athletes or a sports team
- The football coach designed a new drill to improve the players' footwork.
noun:a mentor or instructor who provides guidance and support in a non‑sports context
- She hired a language coach to help her prepare for the overseas assignment.
noun:a railway carriage used for passenger transport
- We settled into a comfortable coach for the long journey across the countryside.
verb:to train, instruct, or develop the abilities of individuals or a team
- The veteran athlete now coaches young swimmers at the community pool.
verb:to give professional advice or mentorship, especially in business or personal development
- The executive hired a leadership coach to improve her decision‑making skills.