自然言語: (linguistics) natural language

自然言語処理: (computing) natural language processing, NLP

原子力発電所: nuclear power plant (abbr. 原発)

原子力発電: nuclear electric power generation (abbr. 原発)

原子番号: atomic number

謹厳実直: sobriety and honesty

現代英語: Modern English

糖原病: glycogenosis

源五郎鮒: Carassius cuvieri the Japanese crucian carp or white crucian carp, a type of 鮒 (funa, “crucian carp”), an edible freshwater ray-finned fish related to carp and goldfish and endemic to Lake Biwa in Japan

語源学: etymology (study of the historical development of languages, particularly of individual words)