See you limit yourself by only having two words to describe these things. Normally, sure you can argue English vs. American but English is straight up better here.
^These are fries.
^These are chips.
Crisps:
Chips:
Fries:
This way, you can easily specify whether you mean fries or chips, which are both very different (mostly in texture, but also obviously in size). How do Americans differentiate these?
And chips beat fries any day. Nice and crisps on the outside, fluffy on the inside. Yummy yummy