A noun appearing as G. tump “shed” in the Gnomish Lexicon of the 1910s (GL/71), clearly a cognate to ᴱQ. tumpo “shed, barn” which was derived from either ᴱ√TṂPṂ or ᴱ√TUPU (QL/93, 95).
Neo-Sindarin: Since √TUP “cover” survived in Tolkien’s later writings, I think this word can be salvaged as ᴺS. tump “shed”, though it does conflict with [N.] tump “hump”.
An adjective appearing as G. barn or baron “tilled, inhabited” in the Gnomish Lexicon of the 1910s (GL/21), clearly derived from the early root ᴱ√MBARA “dwell, live” (QL/63). As such, likely this word originally meant “inhabited” and the sense was later extended to “inhabited and prepared for cultivation” = “tilled”. As such it likely refers primarily to inhabited land rather than inhabited dwellings, and more specifically to tilled land inhabited by an agricultural people rather than simple hunter-gatherers.
Neo-Sindarin: Since √MBAR continues to appear in Tolkien’s later writings, I would retain ᴺS. baron “tilled, inhabited” for purposes of Neo-Sindarin.