Arial vs. Helvetica

Arial

Arial, sometimes marketed or displayed in software as Arial MT, is a sans-serif typeface and set of computer fonts in the neo-grotesque style. Fonts from the Arial family are packaged with all versions of Microsoft Windows from Windows 3.1 onwards, some other Microsoft software applications, Apple's macOS and many PostScript 3 computer printers.

Helveticanoun

a typeface in which characters have no serifs

Helvetica

Helvetica or Neue Haas Grotesk is a widely used sans-serif typeface developed in 1957 by Swiss typeface designer Max Miedinger with input from Eduard Hoffmann. Helvetica is a neo-grotesque design, one influenced by the famous 19th century (1890s) typeface Akzidenz-Grotesk and other German and Swiss designs.