Art Nouveau and Art Deco were both radical style developments of the early 20th century, but each had their own distinct voice.
The difference between Art Nouveau and Art Deco explained - Gallerease
What's the Difference? A Guide to Art Nouveau and Art Deco – River Oaks Houston
Arts and Crafts, Art Deco, and Art Nouveau: What's the Difference?
Art Nouveau vs Art Deco Jewellery – Lillicoco
What's the Difference Between Arts and Crafts, Art Deco, and Art Nouveau?
Art Deco vs. Art Nouveau: Period Features and Examples
What is Art Deco interior design? – Artiss
What's the Difference Between Arts and Crafts, Art Deco, and Art Nouveau?
What Is the Difference Between Art Nouveau and Art Deco?