バナナの皮[banananokawa] banana peel
一皮[hitokawa] unmasking
化の皮[bakenokawa] masking one's true character
化けの皮をはぐ[bakenokawawohagu] to unmask (someone's true nature)
果皮[kahi] pericarp (ripened ovary wall forming part of a fruit)

外皮[gaihi] investment (in the sense of outer layer)
角皮[kakuhi] cuticle
桜皮[kanba] birch (esp. Japanese white birch)
乾皮[kanpi] dried hides
雁皮紙[ganpishi] traditional Japanese paper made from the fibre of plant species Diplomorpha sikokiana (high quality, glossy)

学者膚[gakushahada] scholarly bent of mind
完膚無き迄[kanpunakimade] completely
山膚[yamahada] mountain's surface
地膚[jihada] texture
膚着[hadaginu] underwear

皮膚[hifu] skin
皮膚移植[hifuishoku] skin graft
皮膚科[hifuka] dermatology
皮膚病[hifubyou] skin disease