This is the 18028th most frequent Russian word.
фольклорного
"Folklornogo" means "folkloric" or "related to folklore" in English.
The word 'фольклорного' describes the type of art, indicating its relation to traditional or cultural folklore.
Фестиваль представил произведения фольклорного искусства.
The festival showcased works of folklore art.
'Фольклорного' here characterizes the nature of the costumes, showing their connection to traditional folklore.
На выставке были показаны костюмы фольклорного характера.
The exhibition featured costumes of a folklore nature.
In this case, 'фольклорного' defines the heritage specifically in terms of its folklore significance.