Focusing on YED, please explain the type of Goods?

Normal good: 1 or greater than 1, as YED increases, QD for a good increases too.

Superior/ Luxury good: Also a normal good: it makes up a large proportion of consumption e.g. a new car. (Scarce to  buy/ high price)

Inferior Good: Less than 1. As YED rises, QD falls as the consumer has more money to spend on ''better'' alternamtives. E.g. Macdonalds is an inferior good.