>Some of them depict physical objects in a style that can only really be called skeuomorphic
No, this style cannot really be called skeuomorphic. You cannot have "skeuomorphic" icons. Neither etymologically or semantically.
Skeuomorphic etymological comes from Greek for "appliance like".
And semantically it's about GUIs (key distinction: GUIs, not icons or images) emulating real world objects.
A movie player interface that looks like a real-world DVD player is a skeuomorphic UI.
A movie player icon that looks like a TV set, or a Dick Utility icon with a hard drive and a pair stethoscope are not "skeuomorphic".
They are merely life-like depictions.
Same way, if an icon for my "Horse" app (say, a note taking app) is a realistically rendered horse, that's not "skeuomorphism". That's just an icon with a plain old "realism" painting/rendering of a horse.
>Some of them depict physical objects in a style that can only really be called skeuomorphic
No, this style cannot really be called skeuomorphic. You cannot have "skeuomorphic" icons. Neither etymologically or semantically.
Skeuomorphic etymological comes from Greek for "appliance like".
And semantically it's about GUIs (key distinction: GUIs, not icons or images) emulating real world objects.
A movie player interface that looks like a real-world DVD player is a skeuomorphic UI.
A movie player icon that looks like a TV set, or a Dick Utility icon with a hard drive and a pair stethoscope are not "skeuomorphic".
They are merely life-like depictions.
Same way, if an icon for my "Horse" app (say, a note taking app) is a realistically rendered horse, that's not "skeuomorphism". That's just an icon with a plain old "realism" painting/rendering of a horse.