Whats the difference in "Hybrid chord" and "Sus4" ? And if you use Hybrid or Sus4 chord do you have to resolve to there original form ?
Berklee defines a Hybrid chord as 'A compound chord consisting of upper chord tones (except the third) and tensions above the indicated root. Also known as incomplete chords or chords without thirds.' It gives F/G as an example.
To my mind this is a muddled concept. Either it's 'G9sus4(omit5)' or it's 'F/G'. If the latter, it DOES have a 3rd, in the 'F' part of the chord. Within the terms of Berklee's definition, I suppose a sus4 chord could be considered a 'hybrid'.
But this is just Berklee, with it's 'scale-over-chord' approach to improvisation methods. Most music is not improvised jazz. Note Berklee's opinion and use it if you find it useful.
Anyway. Whether you call it 'F/G', a 'hybrid' or a 'sus4', no it doesn't have to resolve to the 'non-sus' form of the chord. Such a resolution isn't even 'expected' in the way that a dominant 7th is 'expected' to resolve to the tonic, but often doesn't.