Noun	Adjective
nature 自然 He is spending more time in the forests. He is trying to get closer to nature.	natural Science is the study of natural phenomena.
phenomenon 现象 The formation of a rainbow is an example of a natural phenomenon.	phenomenal The goal scored by the Penang footballer was phenomenal.
origin 起源 Her family is of Chinese origin.	original She is singing an original song.
Orient 朝向 / 东方  Penang is  sometimes called the "Pearl of the Orient".	oriental He enjoys oriental food more than western cuisines.
denture 牙 / 假牙 The old woman made a new set of dentures.	dental We were taught dental hygiene in school.
structure 结构 That Greek structure is fascinating.	structural Concrete and steel give the building its structural strength.