A boat is capsized when it has flipped upside down or onto its side, and can't be sailed until it is righted.
Video: view
Video: view
Chewing is when you put food in your mouth and keep pressing or grinding it between your teeth until it is soft and mushy enough to swallow.
People and animals will chew a lot of things that aren't food though. Some people chew their fingernails, or the ends of pens and pencils. Dogs will chew your shoes and furniture so it is good to get them a chew toy like in the picture.