Level

cothrom

(same height at all places)

cothrom

(at the same height as some reference)

cothrom

(being unvaried)

réidh

(same height at all places)

airde

(distance relative to a given reference elevation)

céim

(area of almost perfectly flat land)

leibhéal

(tool)

leibhéal

(distance relative to a given reference elevation)

leibhéal

(degree or amount)

leibhéal

(area of almost perfectly flat land)