실익이 · 실익을
actual benefit, real gain
Example
이번 협상에서 우리가 얻은 실익은 크지 않았습니다.
The real gains we got from this negotiation were not large.
Word parts
실 real+익 benefit
Literally 'real benefit', as opposed to just name or appearance.
Good to know
Often contrasted with 명분: 명분보다 실익 = real gains over appearances.