mittah (Hebrew #4296)
a bed (as extended) for sleeping or eating; by analogy, a sofa, litter or bier
KJV usage: bed((-chamber)), bier.
Pronounce: mit-taw'
cheder (Hebrew #2315)
an apartment (usually literal)
KJV usage: ((bed) inner)chamber, innermost(-ward) part, parlour, + south, X within.
Pronounce: kheh'-der