Base

alguspunkt

(starting point of thought)

alus

(chemical compound that will neutralize an acid)

aste

(math: number raised to the power of an exponent)

baas

(permanent structure for housing military)

kodu

(safe zone in children's game)

peakorter

(headquarters)

põhi

(starting point of thought)

lähtuma

(have as its foundation or starting point)