1.adjectival nouns or quasi-adjectives (keiyodoshi); noun (common) (futsuumeishi)
pure; genuine; real
2.adjectival nouns or quasi-adjectives (keiyodoshi); noun (common) (futsuumeishi)
pure (of a subject of study; as opposed to applied, practical, etc.)
3.adjectival nouns or quasi-adjectives (keiyodoshi); noun (common) (futsuumeishi)
genuine (parts, accessories, etc.); official; first-party