Usually when people say "Asian" they are talking Taiwanese, Korean, Chinese and Japanese. East Asian.
Otherwise they will specify, Southeast ASian, South Asian, West Asian, etc.
Yeah, it's all Asia, but that's just how people talk.
About American women. Most of them just basically live like men. They wear sneakers, jeans, a tshirt, simple hairstyle, nothing very exotic or beautiful, just totally functional.
Obesity and ugliness is epidemic in the US. A few places like Hawaii, Florida and Cali have pretty hot women. But outside these places it's pretty damn rough. Maybe 5% of the women are really hot in most US towns. They just don't even try at all.