Dear United Kingdom,
Please quit referring to these as tortillas/Doritos/nachos. They are tortilla chips. Like crisps, but made from (Mexican) tortillas.
These are (Mexican) tortillas (corn in this instance – mostly flour ones are used in the UK).
These are nachos – tortilla chips are used as the base then toppings are added. Usually cheese, beans, guacamole, pico de gallo (salsa), sour cream – maybe spicy mince. It’s kind of like a pizza where the tortillas serve as the bread base.
And these are Doritos. They are a brand of tortilla chips that come in a variety of flavours. Similar to Walkers and their range of potato crisps.
I hope this post serves you well and you quit getting so confused by this products.