King James Bible Dictionary

Heb. ah (Jeremiah 36:22, 23; R.V., "brazier"), meaning a large pot like a brazier, a portable furnace in which fire was kept in the king's winter apartment.

Heb. kiyor (Zechariah 12:6; R.V., "pan"), a fire-pan.

Heb. moqed (Psalms 102:3; R.V., "fire-brand"), properly a fagot.

Heb. yaqud (Isaiah 30:14), a burning mass on a hearth.

General references
Genesis 18:6; Isaiah 30:14; Jeremiah 36:22-23
Brazier

One way of baking much practiced in the East is to place the dough on an iron plate, either laid on or supported on legs above the vessel sunk in the ground, which forms the oven. The cakes baked "on the hearth" (Genesis 18:6) were probably baked in the existing Bedouin manner, on hot stones covered with ashes. The "hearth" of King Jehoiakim's winter palace, (Jeremiah 36:23) was possibly a pan or brazier of charcoal. From this we see that the significance of the Hebrew words translated hearth is not the same as with us.

HE'ARTH, noun harth. A pavement or floor of brick or stone in a chimney, on which a fire is made to warm a room, and from which there is a passage for the smoke to ascend.

HE'ARTH-MONEY

HE'ARTH-PENNY, noun A tax on hearths.