"Nora Gami" means "Stray God" in Japanese.
"Yuki" (meaning "snow" in Japanese) is the name of one of the series' main characters, Yukine/Yuki, who coincidentally shares the name with his voice actor, Yuki Kaji.
Adapted from a Japanese manga series written and illustrated by the manga artist duo Adachitoka. It was serialized in Kodansha's Shounen manga magazine Monthly Shounen Magazine from December 2010 to January 2024, with its chapters collected in 27 tankobon volumes.
Aside from the anime and manga there is a mobile game titled Noragami -Kami to Enishi-.