Synonyms for Illumination (same or very similar meaning)
WordNet sense 1 (a condition of spiritual awareness; divine illumination):
light
WordNet sense 2 (an interpretation that removes obstacles to understanding):
clarification, elucidation
WordNet sense 3 (the luminous flux incident on a unit area):
illuminance
WordNet sense 4 (painting or drawing included in a book (especially in illuminated medieval manuscripts)):
miniature
From the ODE community, based on WordNet
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