Pasta, noodles and spaghetti are a rich source of complex carbohydrates, which release Energy over a long period of time rather than short & quickly. Traditionally noodles must contain at least 5.5% egg solids by weight whereas pasta is much lighter and under Italian law can only be made with durum flour. The Natures Healthbox range of pasta & noodles also includes a variety suitable for those following a wheat or Gluten Free diet.
Noodles are of Oriental origin and could be considered one of the most popular staple food items of China. Noodles are mostly made from an unleavened dough of wheat but can also be made using rice and potatoes. One characteristic feature of noodles is their unmistakeable shape (long, thin & wavey), while the other is how very easy they are to cook with - simply add them to boiling water to make them soft & edible.
Pasta is of Italian origin, where in Italy, it is made exclusively with durum wheat & vegetable extracts. However, it is dried pasta that dominates many recipes around the world these days, which when made without eggs, can be safely stored on your kitchen shelves for up to 2 years. In addition to wheat flour, pasta can be made from grains and cereals too, while other variations include 'stuffed pasta' like Ravioli or Gnocchi.
People consume pasta and noodles depending on their preferences, however preparing a meal that's meant to feature pasta using noodles could prove disappointing and the same could be said if you make a noodle-based meal using pasta. Those with gluten sensitivities tend to prefer noodles over pasta since they do not contain any gluten but pasta does have a superior nutritional profile. Pasta is enriched with nutrients, containing more Thiamin and Riboflavin than noodles, and generally has higher protein levels too.
Pasta and noodles clearly have many notable differences, and at first, may appear interchangeable. However it's quite clear that these foods are intended to serve different purposes and an individuals specific needs & tastes.