What is the relationship between folk culture and intangible cultural heritage?

The intangible cultural heritage is a generalization, not only the title of the intangible cultural heritage is "intangible cultural heritage", so that a person's family name, is also intangible cultural heritage, family name is your freedom, but to keep or not to keep it is a legacy

And folk culture is part of the "intangible culture", folk culture is widely accepted, for example, the Fuzhi upside down is

And folklore is the The folk culture is part of the "intangible culture", the folk culture is widely accepted by everyone, for example, the Chinese character "福字" is

And folklore is another part of the folk culture, folklore is more limited, for example, regional, racial, for example, the Hui people don't eat pork is a folklore