[vilwa < wilwa] noun "air, lower air" (distinct from the 'upper' air of the stars, or the 'outer') (WIL; in one place vilwa was not struck out, VT46:21) According to VT46:21, Tolkien considered vilda < wilda as a replacement form, but rejected it.
Quenya
lindë
air, tune, singing, song
vilwa
air, lower air
wilma
air, lower air
wilma noun "air, lower air" (distinct from the 'upper' air of the stars, or the 'outer') (WIL)
vilya
air, sky
vilya noun "air, sky", also name of tengwa #24. Older wilya. (Appendix E). Early "Qenya" has Vilya (changed from Vilna) "lower air" (LT1:273); also vilya "air" (MC:215)
lindë noun "air, tune, singing, song" (SA:gond, (LIN2, [GLIN]); lindelorendor "music-dream-land"; see laurelindórenan lindelorendor... _(LotR2:III ch. 4, cf. Letters:308). _Also compare lindi- in lindimaitar, q.v. (but the other compounds here cited do not give a lindë a stem-form lindi-).