escala

ladder (a frame, usually portable, of wood, metal, or rope, used for ascent and descent); scale (an ordered, usually numerical sequence used for measurement, means of assigning a magnitude); scale (a series of notes spanning an octave); ladder, hierarchy (of a company, of the military); scale (the ratio of depicted distance to actual distance)

“a gran escala” — on a broad scale

Inherited from Latin scāla. Cognates include French échelle.

stopover, layover (a short interruption in a journey or the place visited during such an interruption)

“hacer escala en” — stop over in; do/have a stopover in

Borrowed from Italian scala, in this sense taken from Byzantine Greek σκάλα (skála), itself from Latin scala.