Qenya
kalta-
verb. to (cause to) shine, light up, kindle (lamp etc.)
narta-
verb. to kindle, to kindle, *ignite, inflame, set fire to
Beware, older languages below! The languages below were invented during Tolkien's earlier period and should be used with caution. Remember to never, ever mix words from different languages!
A verb in The Etymologies of the 1930s for “kindle” derived from the root ᴹ√NARTA of the same meaning (EtyAC/NARTA). This root is probably just a causative verb formation from ᴹ√NAR “flame, fire”, more literally “✱make fire”. Hence I think this verb can be used in the general sense of “✱ignite, inflame, set fire to”, etc.