use, usage

(computing, mathematics) algorithm / (mathematics) operation / arithmetic

complex (not simple or straightforward)

a program (leaflet listing information about a play, game or other activity) / (broadcasting) a program (performance of a show or other broadcast on radio or television)

(computing) program (to write code, to enter a program or other instructions into a computer); event schedule

extraordinary, unusual

emergency

very; extremely / exceedingly; tremendously

use, utilize

computerization; computerisation