Andúril noun "Flame of the West", sword-name (LotR1:II ch. 3)
Quenya
andúril
proper name. Flame of the West
Andúril
flame of the west
Andúnië
sunset
Andúnië (apparently a variant form of andúnë) place-name, a city and port on the western coast of Númenor, said to mean "sunset". (Appendix A, Silm, UT:166, NDŪ/VT45:38)
andúnië
place name. Sunset
A city in western Númenor, “so called because it faced the sunset” (S/261). It is andúnë “sunset” with the abstract-noun suffix -ië.
Conceptual Development: The name ᴹQ. Andúnie appeared in the earliest tales of Númenor, first as a name for Númenor itself (LR/14), but soon changing to the name of a major city of that land (LR/25). At one point Tolkien considered changing this name to ᴹQ. Undúnië, but he soon rejected the idea (SD/333, SD/340 note #2).
andúnë
sunset, west, evening
andúnë noun "sunset, west, evening" (NDŪ, Markirya, SA), also in Namárië: Andúnë "West" (but the standard Quenya translation of "west" is Númen) (Nam, RGEO:66) Cf. andu- in Andúnië, Andúril.
andúne
noun. sunset
sunset
The name of Aragorn’s sword after it was reforged (LotR/277), rechristened from its original name Narsil. This new name is a combination of the prefix andú- “west” and the root √RIL “brilliance” (PE17/35, 47). It was translated “Flame of the West” (LotR/277, Let/425).
Conceptual Development: Aragorn’s sword was long called Branding in Lord of the Rings drafts, and ᴹQ. Andúril did not appear until a late typescript (WR/370).