Quick tips to help you learn one from the other.
Writing by an American who isn’t an expert at either. (So proceed with caution.)
Basic sounds:
- “j” is replaced by “lh” – trabajo becomes trabalho.
- “h” is replaced by “f” – hijo becomes filho, habla becomes fala.
- “z” is replaced by “ç” – almuerzo becomes almoco, cocino become cozinho.
- “y” replaced by “j” – ya becomes ja.
- “h” replaced by “g” – ahora becomes agora.
- “ie” > “e” – tambien becomes bem.