as, just as, like / as well as

once, as soon as

once, as soon as

(proscribed) despite that (even though; despite the fact that; although)

while, whereas, though; expresses a sense of opposition between simultaneous events / when, while

(+ subjunctive) so that, in order that

while, whilst, as

as soon as

(accusative, relative) what (relative pronoun - direct object) / (accusative, interrogative) what (in indirect questions)

(archaic or regional) as soon as / (regional) as long as, since