Answer 1

a cardView can be is a view that helps simplify the setting of attributes for a row in a listview(can also be used in other views). for instance instead of you manually making a drawable to have elevation and shadow on a row element in your listview, the cardview has 'Card Elevation' attributes. Similarly the corner radius. The listview on the otherhand as the name suggests, present items in a list and has related atrributes. listview and cardviews often work hand in hand with card as the child.