左右相称: symmetry

左右対称: bilateral symmetry

dusk

(dialect) sour

(originally Kyūshū) Synonym of こい (koi, “deep; strong; dense”)

evening

zero

a custom, usual practice, habit / a precedent / the aforementioned / a case, an instance, an illustration, an example

a bow, the gesture of bending at the waist / an expression of thanks or gratitude

age