núlë ("ñ")noun "black arts, secrecy" (PE17:125)
black arts, secrecy
knowledge, philosophy (including science)
Nolmë ("ñ")noun "knowledge, Philosophy (including Science)" (PM:360 cf. 344)
wisdom, secret lore
nolwë ("ñ")noun "wisdom, secret lore" (ÑGOL)
sairina adj.? "magic" (evidently adj. rather than noun) (GL:72)
ista (1) noun "knowledge" (IS). Also istya.
istya noun "knowledge" (IS). Also ista (#1).
issë noun "knowledge, lore" (LT2:339; rather ista or istya in Tolkien's later Quenya)
knowledge, understanding, intelligence
handë noun "knowledge, understanding, intelligence" (KHAN). Note: *handë is (probably) also the past tense of the verb har- "sit".
phantom, disembodied spirit, when seen as a pale shape
fairë(1) noun "phantom, disembodied spirit, when seen as a pale shape" (pl. fairi in Markirya); compare ausa. The noun fairë was also used = "spirit (in general)", as a kind of being (MR:349, PE17:124). In VT43:37 and VT44:17, fairë refers to the Holy Spirit (fairë aista or Aina Fairë)