If you open the Android security settings you'll be asked if you want to set a password or pin. A password is longer and can contain arbitrary characters. I've never heard a person refer to a short series of numbers used to protect something as a password and not a pin.
Eh, you should clarify that this is not an AOSP lockscreen. It looks like Huawei's EMUI, which is quite heavily modified and might simply be a translation error.
Meizu phone, Flyme UI. Equally as Chinese as the Huawei you mentioned, so your point stands. Whether or not a tranlation error though, the GP had never heard of anyone using 'password' in the context of a numeric pincode, but it does happen. Who knows, I could be biased through my repeated exposures to the Meizu lock-screen, but as a native English speaker I don't have a hard time imagining a numeric-only pin being referred to as a password.
Thank you. It's not like the use of the word 'password' made the point I was making difficult to understand. I had actually tried to use the word passcode, but it was auto-filled/corrected to password and I didn't catch it.