Synonyms for Morning (same or very similar meaning)
WordNet sense 1 (the first light of day):
aurora, cockcrow, dawn, daybreak, sunrise, sunup, dawning, dayspring, break of day, break of the day, first lightWordNet sense 2 (the time period between dawn and noon):
forenoon, morn, morning timeWordNet sense 3 (a conventional expression of greeting or farewell):
good morningFrom the ODE community, based on WordNetadd/edit