Hide
Concealment, Conceal
noun, verbal noun
Hide and hide make hide! Lots of hiding going on around here. I think... I can't find anyone so I can only assume.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
彼女は犯人を隠匿していたんだよ。
She hid the criminal.