My sister and I were just having a conversation about this actually. She's getting into songwriting, and just starting to write lyrics for her music. She was explaining to me how her music teacher was trying to broaden her mind, to say things like "My heart is bleeding" rather than simply "I'm heartbroken".
I showed her some Opeth lyrics, since it seems like Mikael usually finds really complex, yet poetic and beautiful ways to phrase things. The vocabulary is definitely part of what makes opeth so amazing.
And to all you "Shit Thread" assholes... why are you here? The rest of us are having a good time, GTFO