'ammah (Hebrew #520)
properly, a mother (i.e. unit of measure, or the fore-arm (below the elbow), i.e. a cubit; also a door-base (as a bond of the entrance)
KJV usage: cubit, + hundred (by exchange for 3967), measure, post.
Pronounce: am-maw'
Origin: prolonged from 517
chamesh (Hebrew #2568)
a primitive numeral; five
KJV usage: fif(-teen), fifth, five (X apiece).
Pronounce: khaw-maysh'
Origin: masculine chamishshah {kham-ish-shaw}