1. What does it mean?
In game conversation, 노가다 means repeatedly doing a time-consuming activity for progress, experience, or resources. The word also has a broader colloquial association with hard manual labor and laborious repetitive tasks.
Also written or said as nogada
2. The nuance
It usually stresses tedium more than 파밍 does. Avoid using it to belittle construction workers or other people's work; here it describes the repetitive experience.
3. Examples
“같은 구간을 계속 돌아야 해서 노가다처럼 느껴져.”
Having to repeat the same section makes it feel like a grind.
“파일 이름을 하나씩 바꾸는 건 너무 노가다야.”
Renaming the files one by one is painfully repetitive work.
Sources
References support the meaning and usage. Example sentences are written for NoCapWiki.