kai (Greek #2532)
and, also, even, so then, too, etc.; often used in connection (or composition) with other particles or small words
KJV usage: and, also, both, but, even, for, if, or, so, that, then, therefore, when, yet.
Pronounce: kahee
Origin: apparently, a primary particle, having a copulative and sometimes also a cumulative force
eti (Greek #2089)
"yet," still (of time or degree)
KJV usage: after that, also, ever, (any) further, (t-)henceforth (more), hereafter, (any) longer, (any) more(-one), now, still, yet.
Pronounce: et'-ee
Origin: perhaps akin to 2094