(swimming) flutter kick, a basic swimming technique

earth's surface

front of something

appearance / expression / surface / front / exterior / outward / outwardly / outward appearance / countenance

(archaic) substitution / (archaic) price, cost, charge / (historical) shiro, a unit of land

world, society / (archaic) age, generation, era of rule

generation of a royal family / era, age, decade

charge, fare, rate, fee, price, rent / (indicating years spanning a specific period) -ies, -hundreds

substitute / alternate / representative / generation

upper, over