curu noun "skill" in names like Curufinwë (q.v.) and Sindarin Curufin, Curunir. (SA; possibly the same as curo, curu- above but there was a word curu ["k"] in Tolkien's early "Qenya", glossed "magic, wizardry" [LT1:269]).
Quenya
curu
noun. skill, skill; [ᴱQ.] magic, wizardry
curu
skill
curo
skillful [?device - tolkien's handwriting was illegible]
curo (curu-) noun "a skillful [?device - Tolkien's handwriting was illegible]". (VT41:10)
curwë
craft
curwë ("k")noun "craft" (KUR), "skill of the hand" (VT41:10), Curwë ("K") "technical skill and invention" (PM:360 cf. 344)
findë
cunning
findë (2) noun? (less likely adj.) "cunning" (LT1:253; this "Qenya" word is possibly obsoleted by # 1 above)
finië
cunning
finië noun? "cunning" (LT1:253)
sairina
magic
sairina adj.? "magic" (evidently adj. rather than noun) (GL:72)
tanwë
craft, thing made, device, construction
tanwë noun "craft, thing made, device, construction" (TAN)
finië
noun. cunning
In Tolkien’s later writing, this word mostly functions as a reduced form of Q. curwë “skill” used as an element in some Quenya names such as Q. Curufinwë and Q. Curumo.
Conceptual Development: In the Qenya Lexicon and Poetic and Mythological Words of Eldarissa of the 1910s ᴱQ. kuru was glossed “magic, wizardry”, and Tolkien further specified that it was used “of the good magic” (QL/49; PME/49). See S. curu for a discussion of the applicability of this word to “magic”.