Examples of websites using
Neue Haas Grotesk
(Neue Haas Grotesk is a sans-serif font designed by Max Miedinger and Christian Schwartz and released by Linotype in 1957. The font family includes multiple styles)
with
Avenir
(Avenir is a sans-serif font designed by Adrian Frutiger and Nadine Chahine, released by Linotype in 1988. It features clean and modern letterforms and is available in multiple weights and styles)