If you know what sound you want to hear, but don't know the compressor settings to make that sound, that is a taste-skill gap.

If you don't know what sound you want to hear at all, that's undeveloped taste.

If you know what code you want to type, but don't know how to use a keyboard, that would be a taste-skill gap.

If you don't know what code you want to type at all, that's undeveloped taste.