He was accused of 'assault'. = He was charged with 'assault'. = 'Assault' charges were brought against him.
He came 'under assault' for his unusual beliefs. [=he was severely criticized for his unusual beliefs]
He was found guilty of 'sexual assault'. [=the crime of touching someone in an unwanted sexual way]
(..) Those are accelerants. BOOTH: You think someone tried to burn her? The fact that I found marks on both arms is consistent with assault. Well, thanks, Cam. We'll get on it. Let's go, Bones. Stay in the left lane. BRENNAN: (..)2015 TvShow: Bones Title: The Promise in the Palace Season: 11 Episode 7