I prefer to describe them as a USB security key. Everyone knows how USB security keys work and now we have a slightly newer standard that new USB security keys

I prefer to describe them as a USB security key. Everyone knows how USB security keys work and now we have a slightly newer standard that new USB security keys use but also we can use devices with a TPM such as phones to avoid having to plug in a separate USB key. And now everyone's acting confused about it since there's also an optional ability to skip entering a password and just use the passkey in some circumstances but that part is not what a passkey is.