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maple (tree)
red leaves (of autumn); autumn colors; leaves changing color
layered colors in garments, resembling autumn colors
venison
「紅葉」 has another reading with different meanings.
紅葉の季節は観光客でどこも混んでいるね。
Everywhere is crowded with tourists during the foliage season.
この木は紅葉すると真っ赤になってきれいだ。
This tree turns bright red when the leaves change, and it's beautiful.
庭の紅葉が赤く色づいた。
The maple in the garden turned red.