They are thin white, semi-transparent noodles that are made from arrowroot starch. They are similar to cellophane noodles in appearance.

Zoodles are zucchini sliced into thin strips so as to resemble noodles.

Glass noodles are made out of mung bean paste, and they are also known as bean thread noodles. Usually added to salads these noodles are thin like vermicelli, but are transparent and are very light in flavor. Good for people who have a wheat intolerance.

No, but you can put spaghetti sauce on top of any sort of noodle or pasta! Spaghetti is a certain type of long, thin noodle that is different from the flat egg noodles.

No. Rice noodles are made of rice while thin spaghetti noodles are made of flour. Different taste and texture. Rice noodles are very white, spaghetti is not. Hope this helps!