failure (in an examination) / failure (to advance to the next grade or graduate from school)

the Precambrian eon

the Hadean eon

E. coli (Escherichia coli)

a gluteus maximus muscle

executive order

(Buddhism) a bodhisattva

most favorite, (especially) food

(mahjong) big three dragons: a 役満 (yakuman, “limit”) hand with triplets or quads of each of the 三元牌 (sangenpai, “dragon tiles”)

modern language / (especially in reference to Japanese) modern Japanese; Japanese in its current form, spoken since the Meiji era and based on the Tokyo dialect