Aqueous coatings are dried by hot air. UV coatings are dried and cured by ultraviolet light. UV coatings are tougher and more slippery than aqueous.
You can write on aqueous coating, but not on most UV coatings. UV coatings can achieve a higher gloss than aqueous.
Because of the differences in these coatings, it’s important for designers and manufacturers to communicate with their print vendors from the beginning of every project.