tópa noun "roof" (TOP)
Quenya
tel
roof
tópa
roof
tópa-
roof
tópa- vb. "roof" (TOP)
rotto
cave, tunnel
rotto noun "cave, tunnel" (VT46:12), "a small grot or tunnel" (PM:365)
rotelë
cave
rotelë noun "cave" (LT2:347)
felco
cave, mine, underground dwelling
felco noun "cave, mine, underground dwelling" (PE17:118); also felca, felehta
felya
cave
felya noun "cave" (PHÉLEG), "mine, boring, tunnel, underground dwel[ling]" (PE17:118)
tel noun "roof" (LT1:268). Rather tópa in Tolkiens later Quenya.