The main difference with traditional gouache is that acrylic gouache is waterproof and cannot be reactivated. It has its pros and cons.
Gouache vs Acrylic: What Makes Them Different and How to Use Them Effectively - Artful Haven
Beginner question about acryla gouache vs regular gouache : r/Gouache
Acrylic Gouache Versus Traditional Gouache
How do I reactivate my dry tube of gouache?
ACRYLIC GOUACHE|SAKURA COLOR PRODUCTS CORP.
7 Differences Between Gouache and Acrylic
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Tempera, gouache and poster paint