A noun in the Qenya Lexicon of the 1910s given as ᴱQ. tampo “a well”, derived from the root ᴱ√TṂPṂ “build”; Tolkien considered transferring the word to ᴱ√TAPA “✱stretch” (QL/93). This word also appeared in the Poetic and Mythological Words of Eldarissa (PME/93).
Neo-Quenya: I think ᴺQ. tampo “well” might be salvaged in Neo-Quenya as a derivative of √TAM “construct”; it is used this way in Helge Fauskanger’s NQNT (NQNT).
A word in the Qenya Lexicon of the 1910s attested only in its stem form vand- “way, path” under the early root ᴱ√VAHA having to do with departure (QL/99). Its uninflected form was probably ✱van, as in ᴱQ. Vansamírin “Road of the Feast of Double Mirth” (LT1A/Qalvanda). It also had a longer form vanda seen in some names like ᴱQ. Qalvanda “Road of Death” (LT1/213) and ᴱQ. Uswevanda or Uswevandë “Way of Escape” (PE13/102; PE15/21).