Cual vs que vs como

[jrhjazznblues]

I have seen all three of these words be used to represent what, seemingly interchangeably. Are there any rules about their usage, or are these three words actually interchangeable?

[aleCcowaN]

I have seen all three of these words be used to represent what, seemingly interchangeably.

That assertion is pretty baffling. Can you provide an example?

[Rusty]

I suppose you mean the interrogatives, all with an accent mark?

¿Cuál es tu nombre? = What is your name?
¿Qué es un nombre? = What does un nombre mean?
¿Cómo? = What? (I didn't hear you?)
¿Cómo que no sabes? = What do you mean you don't know?

None of the interrogatives above are interchangeable, if you want the translation given.
I like what is said on this webpage (https://www.quora.com/What-are-the-differences-between-qu%C3%A9-and-cu%C3%A1l-in-Spanish).

[jrhjazznblues]

That website helps a lot but it doesn't address como at all.