Word
plain; unadorned; undecorated; unadulterated; au naturel; mere; poor; exceedingly
Word

本、素、基
もと
origin; source; base; basis; foundation; root; cause; ingredient; material; (somebody's) side; (somebody's) location; original cost (or capital, principal, etc.); (plant) root; (tree) trunk; first section of a waka; counter for blades of grass, tree trunks, etc., and for falcons (in falconry); handle (chopsticks, brush, etc.); grip
Word
plain, white silk; prime
Word

要素

ようそ
component; factor; item (e.g. in list); element (e.g. in array); member (e.g. data structure)
Word

素材

そざい
raw materials; subject matter
Word

酵素

こうそ
enzyme
Word

水素

すいそ
hydrogen (H)
Word

酸素

さんそ
oxygen (O)
Word

炭素

たんそ
carbon (C)
Word

元素

原素
げんそ
chemical element