magnificence (n.)
mid-14c., "great-mindedness, courage," from Old French magnificence "splendor, nobility, grandeur," from Latin magnificentia "splendor, munificence," from stem of magnificus "great, elevated, noble, eminent," also "splendid, rich, fine, costly," literally "doing great deeds," from magnus "great" (from PIE root *meg- "great") + combining form of facere "to make, to do" (from PIE root *dhe- "to set, put").
Meaning "greatness of appearance or character, grandeur, glory" in English is from late 14c. That of "beauty, splendor, wealth" is 15c. As one of the Aristotelian and scholastic virtues, it translates Greek megaloprepeia "liberality of expenditure combined with good taste."
munificence (n.) "quality of giving or bestowing liberally or lavishly," early 15c., from Old French munificence, from Latin munificentia "bountifulness, liberality, generosity," from stem of munificus "generous, bountiful, liberal," literally "present-making," from munus "gift or service; function, task, duty, office" (see municipal) + unstressed stem of facere "to do" (from PIE root *dhe- "to set, put").
—Etymonline
