Beware, older languages below! The languages below were invented during Tolkien's earlier period and should be used with caution. Remember to never, ever mix words from different languages!

Qenya 

kumbe

noun. mound, heap, mound, heap, [ᴱQ.] pile; load, burden

A noun in The Etymologies of the 1930s glossed “mound, heap” derived from the root ᴹ√KUB (Ety/KUB). It is a later iteration of ᴱQ. kúme or kumbe “a pile, heap, load, burden” from the Qenya Lexicon of the 1910s where it was a derivative of ᴱ√KUMU “heap up” (QL/49). Its Noldorin cognate N. cum appeared in the name N. Cûm-na-Dengin “Mound of Slain” in Silmarillion drafts from the 1930s (SM/312, LR/147), but later this name became S. Haudh-en-Ndengin.

Neo-Quenya: For purposes of Neo-Quenya, I’d avoid this word and use Q. hamna instead, the cognate of S. haudh. In later writings the root √KUB was given the new meaning “hide, secrete” (PE22/155).

Cognates

  • N. cum “mound, heap, mound, heap, [G.] burial mound” ✧ Ety/KUB

Derivations

  • ᴹ√KUB “*mound, heap” ✧ Ety/KUB

Phonetic Developments

DevelopmentStagesSources
ᴹ√KUB > kumbe[kumbe]✧ Ety/KUB

kuv-

verb. to bow

Cognates

  • ᴺS. cov- “to bow”

Derivations

  • ᴹ√KU(Ʒ) “bow” ✧ PE22/102

Element in

  • ᴹQ. kukumba- “to nod repeatedly, (lit.) keep on bowing”
  • ᴹQ. kúvima “flexible”
  • ᴹQ. kúvula “flexible, pliant”

Phonetic Developments

DevelopmentStagesSources
ᴹ√KUB > kuve[kub-] > [kuβ-] > [kuv-]✧ PE22/102