Avenir font pairing with Circular

Examples of websites using 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) with Circular (Circular is a geometric sans-serif font designed by Laurenz Brunner and released by Lineto. The family consists of 6 weights with matching italics, totaling to 12 styles available)