조작이 · 조작을
operation, handling (of a machine)
Example
이 기계는 조작이 간단해서 누구나 쓸 수 있어요.
This machine is simple to operate, so anyone can use it.
Word parts
조 handle+작 make
Literally 'handle and make work'.
Good to know
A homonym 조작 means 'fabrication', as in 사진 조작 'doctored photo', so context matters.
Related words