QUALITY means that something
dos what you NEEDED IT to do
Low-quality always is a problem
Low-grade ISN'T always a problem
GRADE describes how
much people VALUE IT
Higher-grade IS NOT the
same higher-quality
Sophistication = GRADE
Higher-grade stuff typically costs more, but just because you pay
more for something doesn't mean it does what you need it to do
A lobster is higher-grade than a salad and a salad is higher-grade
than a hot dog. However, a hot dog can be higher-quality for a
customer who wants (or needs) eat this kind of food