Basic

ба́зовый

bázovyj

(elementary, simple, merely functional)

осно́вный

osnóvnyj

(chemistry: of a base)

основно́й

osnovnój

(necessary, essential for life or some process)

основно́й

osnovnój

(elementary, simple, merely functional)

фундамента́льный

fundamentálʹnyj

(elementary, simple, merely functional)

элемента́рный

elementárnyj

(necessary, essential for life or some process)

элемента́рный

elementárnyj

(elementary, simple, merely functional)