Is the word geleias the same in Brazilian and European Portuguese?

No.

While the spelling and the literal meaning of the word are identical in both dialects, there is a difference in typical usage. In Brazil, "geleia" is the standard, everyday term for fruit preserves. In Portugal, while "geleia" is understood, it is much more natural and common to refer to this food item as "doce" or "doce de fruta." In Portugal, "geleia" is often reserved for more gelatinous substances or specific preparations (like aspic).

Brazilian Portuguese Examples

1. Eu adoro comer geleias no café da manhã. (I love eating jams for breakfast.)
2. As geleias de frutas vermelhas são as minhas favoritas. (Berry jams are my favorites.)
3. Comprei três geleias diferentes no mercado. (I bought three different jams at the market.)
4. Essa geleia de manga é muito saborosa. (This mango jam is very tasty.)
5. Tem geleias de vários sabores na geladeira. (There are jams of various flavors in the fridge.)

Continental Portuguese Examples

1. Adoro comer doces de fruta no pequeno-almoço. (I love eating fruit preserves for breakfast.)
2. Comprámos vários doces de morango no mercado. (We bought several strawberry jams at the market.)
3. Estes doces de fruta são artesanais. (These fruit preserves are artisanal.)
4. Há uma grande variedade de doces na loja. (There is a great variety of preserves in the shop.)
5. Gostas de doces de amêndoa? (Do you like almond preserves?)