They are different fonts.
A lot of good looking mono fonts look very similar and there is a reason for that. As designers fine tune features for better legibility (main concern with terminal typeface) fonts converge to look roughly the same. But they still have different feel when you get a lot of text on a screen.
But I’m glad you asked. Learn about how font characters are structured[0]. Then zoom in, inspect and compare the details of a few characters from both fonts. This will help you understand how they’re different.
[0] https://www.fonts.com/content/learning/fontology/level-1/typ...