a root / the source; the root / nature; the character one has by birth

perseverance, patience / (arithmetic) root

root / base, foundation

(idiomatic) take root, strike root

(mathematics) root number

a non-migratory fish that lives among the roots of seaweed or coral

a non-migratory fish that lives among the roots of seaweed or coral / alternative for 鮎並 (ainame): a greenling (kind of fish)

(fiction) depicting the fiery spirit of sports; spokon

(slang) monster cock

(soil science) rhizosphere