陰 (Kanji for shady)

Unlike the OTHER shadow kanji (影) which is literal, this shadow kanji (陰) is more figurative: things that are shady, dark, secret, or hidden.

陰 is also the kanji used for naughty bits.

Onyomi

Right now this town is full of decapitated cows, lurking IN the shadows.

かげ	shadow, both literally , and more likely, metaphorically. If someone is operating shady deals from the shadows, you use this kanji. 1/2 KANA ★★★☆☆

xxx　のお陰で(おかげで)	thanks to XXX ★★★☆☆ 1/2 KANA thanks to XXX (despite 陰　 being the 'bad shadow' kanji, お陰で　is not only used with bad things. You can say, thanks to you, I have mastered the techniques of Double Dutch, and it would be fine.)
陰気(いんき) な	gloomy ★★☆☆☆ 陰 (shady) + 気 (mood) = 陰気 (gloomy) gloomy or dark atmosphere
陰謀(いんぼう)	conspiracy ★☆☆☆☆ 陰 (shady) + 謀 (plot) = 陰謀 (conspiracy )
陰部(いんぶ)	sex organs ☆☆☆☆☆ NP 陰 (shady) + 部 (section) = 陰部 (sex organs) sex organs (no stars- people usually say 性器　せいき!)
陰核(いんかく)	clitoris ☆☆☆☆☆ SARC 陰 (shady) + 核 (nucleus) = 陰核 (clitoris) clitoris - not a word you'd use in most conversations, but I'm including it anyway because the literal translation is so irresistable: hidden nucleus! How boss is that?

	Meaning	Hint	Radical
陰	shady	TOWN
影	shadow	HAIR

That part of TOWN is shady so don't go there.

Your HAIR casts a shadow on your face.