An English warbow today is regarded as a bow that follows the historical profile of medieval martial longbows, ie not flat bellied but D section/oval and variants of this, draws full compass and generally passed the ear.
There's historical replica class, ie self yew warbows,
Meane wood warbows, other woods used that would of been used, ie ash, elm, hazel etc
And laminate warbows, bows made of the same profile with laminated strips.
The weight for a warbow is generally regarded as being 80-180lbs+
There are other spec requirements, but someone else would probably be better to answer those.
R.D.