朴 (crude, simple, plain, docile)

彼女かのじょは素朴そぼくで優やさしい人ひとです

She is a simple and gentle person.

素朴そぼくな疑問ぎもんなんだけど、・・・トラとライオンはどっちが強つよいの？

This may be a silly question, but which is stronger - a tiger or a lion?

彼は素朴な性格だ。

He has a down-home personality.