Strong's G2774 — κεφάλαιον (noun)
kephalaion (kef-al'-ai-on) n.
1. a principal thing, i.e. main point
2. (specially) an amount (of money)
[neuter of a derivative of G2776]
KJV: sum 
Root(s): G2776 
Hebrew root: κεφαλή
Occurrences: 2