system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What's the difference between pasta and egg noodles?
gpt
Pasta may or may not have eggs - most Italian pasta is durum wheat flour and water, nothing else. If you buy dry pasta, like spaghetti or fettuccine, that's all it will be most of the time. 
It's not significantly harder to make at home than if it has eggs, just takes more time.
Egg noodles always have eggs.

Pasta can be in many different shapes, only some of which are noodles. 

There isn't really much difference in daily use of the words - the differences are technical and only really of interest to purists.