A noun glossed “a fire, a blaze” in etymological notes from around 1964 (DD), derived from the root √RUYU “blaze (red)” (PE17/184). This word is for an individual fire in the physical world, as opposed to Q. nár for elemental fire, fire as a force or as an abstract concept.
Quenya
ruinë
fire, a blaze
ruinë
noun. fire, blaze, blaze, fire
sá
fire
sá noun "fire" (LT1:265; "Qenya" spelling sâ. Rather nárë in LotR-style Quenya.)
uru
fire
uru noun "fire" (LT1:271)
úr
fire
úr noun "fire" (UR)This stem was struck out in Etym, but a word that must be derived from it occurs in LotR, so it seems that Tolkien restored it. Early "Qenya" also has Ûr, noun "the Sun" (also Úri, Úrinci ("k"), Urwen) (LT1:271). Cf. Úri.
ruinë noun "a fire, a blaze" (PE17:183). Compare nárë.