Coaching

google

ref

mid 16th century(in coach1 (sense 3 of the noun)): from French coche, from Hungarian kocsi (szekér) ‘(wagon) from Kocs’, a town in Hungary.

wiktionary

ref

etymonline

ref

coaching (n.)

1825, "the use of a coach as a public conveyance;" 1849 as "special instruction or training for an exam or an athletic contest;" verbal noun from coach (v.).