ei (Greek #1487)
if, whether, that, etc.
KJV usage: forasmuch as, if, that, (al-)though, whether. Often used in connection or composition with other particles, especially as in 1489, 1490, 1499, 1508, 1509, 1512, 1513, 1536, 1537. See also 1437.
Pronounce: i
Origin: a primary particle of conditionality
hotan (Greek #3752)
whenever (implying hypothesis or more or less uncertainty); also causatively (conjunctionally) inasmuch as
KJV usage: as long (soon) as, that, + till, when(-soever), while.
Pronounce: hot'-an
Origin: from 3753 and 302