17.1) Relative Pronouns

who, which (relative)

който

formed from interrogative кой + -то; agrees in gender and number with the noun it refers to

whom (relative)

когото

accusative changes only in the masculine: когото; other forms match който

where (relative)

където

when (relative)

когато

because

защото

conjunction formed from защо (why?)

how, as

както

from where (relative)

откъдето

to where (relative)

накъдето

as much as, as many as

колкото