emblazonry
/ˌɛmbləˈzɑrnɪ/ EM-blah-ZAR-n-ee
Definitions
1. noun
the act of decorating or ornamenting with a coat of arms or other emblems, typically on a flag, banner, or coat of arms.
“The royal family’s coat of arms was a masterpiece of emblazonry, showcasing their family’s rich history.”