oun (Greek #3767)
(adverbially) certainly, or (conjunctionally) accordingly
KJV usage: and (so, truly), but, now (then), so (likewise then), then, therefore, verily, wherefore.
Pronounce: oon
Origin: apparently a primary word
allos (Greek #243)
"else," i.e. different (in many applications)
KJV usage: more, one (another), (an-, some an-)other(-s, -wise).
Pronounce: al'-los
Origin: a primary word