Disputed Greek terms

Disputed Greek terms in the Bible include the following. In some cases the issue is whether the term has the same meaning in all contexts, or does its meaning properly vary:

• epouranios - typically translated as "of heaven," but what about its use in the context of wickedness in Ephesians 6:12 ? There the KJV uniquely translates its as in "high places."
• oinos - typically translated as wine, but there is an argument that it really means "fruit of the vine" and need not be fermented, such that it could refer to grape juice.