Grunge has 2 different meanings across 1 category:
Noun
Noun
1
the state of being covered with unclean things
"After falling through a pile of wet leaves, his shoes were completely soaked in grunge."
2
Dirt or filth, especially when difficult to clean.
"The old dog had a coat covered in grunge that would take hours of scrubbing to remove."
Broader Terms (hypernyms)