intangible cultural heritage
Refers to traditions, performing arts, rituals, and craftsmanship recognized by UNESCO or national bodies as part of cultural heritage.
Noh theater is registered as a UNESCO Intangible Cultural Heritage.
世界遺産 refers to tangible World Heritage sites (natural or cultural), while 無形文化遺産 specifically denotes intangible cultural heritage.
Compound of 無形 (intangible) + 文化 (culture) + 遺産 (heritage). The term is a direct translation of the English 'intangible cultural heritage' and became widely used after the UNESCO Convention for the Safeguarding of the Intangible Cultural Heritage in 2003.