Roboto is a neo-grotesque sans-serif typeface family developed by Google as the system font for its mobile operating system Android, and released in 2011 for Android 4.0 "Ice Cream Sandwich".
Roboto
In metal typesetting, a font is a particular size, weight and style of a typeface. Each font is a matched set of type, with a piece for each glyph. A typeface consists of various fonts that share an overall design.
Metal type sorts arranged on a composing stick
A 1910 letterpress poster, advertising an auction, using a variety of typefaces and fonts
A set of optical sizes developed at URW of the typeface Leipziger Antiqua. The fonts become thicker and more widely spaced as the point size for which they are designed decreases.
Serifs within the Thesis typeface family