夕日
ゆうひ · yuuhi · JLPT N2 · noun
sun
🌇 夕 (evening) + 日 (sun/day) = the sun in the evening, i.e. the setting sun
夕 is a sign for the crescent moon, which hints at evening. 日 is the sun. Put together, they name the sun as it sinks at dusk.
日 — pictograph of the sun
日 is a pictograph of the sun, originally drawn as a circle with a dot or stroke inside representing the sun's substance. Over time the round shape was squared off into the modern rectangular form. It means 'sun' and by extension 'day'.