Folklife and Folk Architecture

To my understanding, the difference between folklore and folklife is questionable. Some people consider them the same thing, others believe one encompasses the other. However, I think it is more widely understood to be that folklore focuses on oral traditions, whereas folklife consists of material culture. So for example, a legend or joke would be considered folklore, but a family quilt or a traditional dance would be considered folklife. 

The difference between everyday architecture and folk architecture was a little confusing to me. I was surprised to see that form, rather than function, was the major aspect in identifying folk architecture. But as I read the chapter, it became more clear that what makes architecture "folk" is whether or not it has a traditional form. So, a log cabin or a native american longhouse would be considered folk architecture because they are traditional archetypes for housing structures. A modern, oddly shaped stadium or museum for example, would not be considered folk architecture because its form and structure have no roots traditionally or culturally.