輝く【かがやく】
to shine, to sparkle, to twinkle, to glitter, to glisten, to light up (with happiness, hope, etc.), to beam, to gleam, to glow
輝き【かがやき】
brightness, brilliance, brilliancy, radiance, glitter
輝かしい【かがやかしい】
brilliant, glorious, glittering, bright, splendid (e.g. achievement, success), promising (e.g. future)
光り輝く【ひかりかがやく】
to shine, to glitter
輝度【きど】
brightness, luminance
光輝【こうき】
brightness, splendour, splendor
輝かす【かがやかす】
to light up, to brighten