i heard on Soundcheck an interview of Thurston Moore about how bands and people who belonged to the grunge era didn't really call themselves as grunge until an employee of Subpop Records (seattle's leading record label who's responsible for grunge explosion).
So i kinda wonder if Subpop didn't coined the term grunge to describe their label's music, then will people still call it punk rock even though some grunge bands somehow managed to combine punk and heavy metal?