title: What is the difference between "Drop Down Menu" and "Select Field" in Material-UI
body: <p>It seems that these two instances duplicate each other: <a href="http://www.material-ui.com/#/components/dropdown-menu" rel="noreferrer">Drop Down Menu</a> and <a href="http://www.material-ui.com/#/components/select-field" rel="noreferrer">Select Field</a>. Both follow Google Material Design <a href="https://www.google.com/design/spec/components/menus.html" rel="noreferrer">specs for menus</a>.  The difference is not that obvious at first sight. Why do they provide two similar components?</p>