炭酸: carbonic acid / 単産: industrial union

計算: calculation / 経産: parity / ケイ酸, 珪酸: silicic acid / 卦算: paperweight

計算: calculate

畜産: animal husbandry

酸味: sourness / 三位: third place

an aunt who is older than one's parent

三五: fifteen; three and five; alternate for 琵琶 (biwa, “a traditional biwa lute”) / 参伍: mixing together, mixture / 珊瑚: coral / 産後: after childbirth, the postpartum period

珊瑚礁: a coral reef

uncle who is older than one's parents

maid