English and Esperanto both reach for the verb beneath the noun — 'dawn' and 'tagiĝo' are processes, something happening rather than something named. Spanish stopped at the retina: 'alba' is the whitening, a painter's gesture toward the moment light bleaches the dark. Chinese holds the paradox inside the compound: 黎, carrying its old sense of multitude and darkness, pressed against 明, sun and moon written together — the drama of every dawn encoded in two characters' collision. That four languages cannot agree on what this threshold moment is tells you the moment is too large for any one metaphor.
The noun 'dawn' evolved from the verbal noun of Middle English 'dawen' (to dawn), itself from Old English 'dagian' (to become day). It is originally a verb pressed into service as a noun — a structural fact the word never quite forgets.
The more common everyday word is 'amanecer' (from Latin 'mane,' morning, via a Vulgar Latin inchoative formation). 'Alba' is literary and liturgical but fully standard, and gives its name to the medieval alba genre — love poems built around lovers forced to part at first light. Both words are in active use; 'alba' is foregrounded here for its chromatic etymology and literary freight.
The compositional analysis of 黎 is contested in Chinese paleography, and its attestation in the specific sense of 'pre-dawn darkness' is uncertain. Historically the character conveyed 'multitude' or 'the common people' (as in 黎民). In 黎明 it took on the specialized sense of the dense blackness just before daybreak — darkness as mass, as weight. Treat this semantic layer as approximate rather than settled.
One of the most semantically transparent compounds in Chinese: sun and moon written side by side yield the character for brightness, clarity, and understanding. Both sources of light — diurnal and nocturnal — combined into a single luminosity.
黎明 is a Sino-Tibetan compound with no genetic connection to any Indo-European language. Alternate Chinese words for dawn include 拂晓 (fúxiǎo, 'brushing of the dawn'), 曙光 (shǔguāng, 'first rays'), and 晨曦 (chénxī, 'morning glow'), each foregrounding a different quality of the transition.
Esperanto also uses 'aŭroro' (from Latin Aurora, the dawn goddess) for a more poetic or personified sense. 'Tagiĝo' is the morphologically productive, distinctly Esperanto form. Zamenhof derived 'tago' (day) primarily from German 'Tag,' itself cognate with English 'dawn' through Proto-Germanic *dagaz — making 'tagiĝo' a constructed twin of the English word, built from the same deep root but assembled rather than inherited.
Perhaps dawn is named so many ways because it is the one moment the sleeping world catches itself in the act of becoming.