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
gar (Greek #1063)
properly, assigning a reason (used in argument, explanation or intensification; often with other particles)
KJV usage: and, as, because (that), but, even, for, indeed, no doubt, seeing, then, therefore, verily, what, why, yet.
Pronounce: gar
Origin: a primary particle