Before

eher

(in advance)

im Voraus

(in advance)

vorher

(at an earlier time)

vorn

(at the front end)

vorne

(at the front end)

zuvor

(at an earlier time)

bevor

(in advance of the time when)

bevor

(rather or sooner than)

vor

(earlier than)

vor

(in front of in space)

vor

(in the presence of)

vor

(in front of according to an ordering system)