I saw a little bit confusion....let's make order! Pasta is pasta: spaghetti or other kind of pasta. Le paste are named pastry sometimes.....(more correct named pasticcini)......Una pasta also can mean a paste: for example the toothpaste... or similar. I hope could be more clear
No, it's not the same:
- Pasta in bianco: pasta with no condiments = plain pasta
- Pasta bianca: white pasta (that would be a weird statement), paste, pastry or dough
Pasta in bianco can actually be served with oil or butter and parmigiano, it's a common meal for people with an upset stomach.