  This work aims at determining the composition of certain $N^*$ and $\Delta$
resonances, i.e. whether they are compact states formed directly by quarks and
gluons, or hadronic molecules generated from the meson-baryon interaction. The
information of the resonance poles is provided by a comprehensive
coupled-channel approach, the J\"{u}lich-Bonn model. $13$ states that are
significant in this approach are studied. Two criteria for each state are
adopted in this paper, the comparison thereof roughly indicates the model
uncertainties. It is found that the conclusions for $8$ resonances are
relatively certain: $N(1535) \frac{1}{2}^-$, $N(1440) \frac{1}{2}^+$, $N(1710)
\frac{1}{2}^+$, and $N(1520) \frac{3}{2}^-$ tend to be composite; whereas
$N(1650) \frac{1}{2}^-$, $N(1900) \frac{3}{2}^+$, $N(1680) \frac{5}{2}^+$, and
$\Delta(1600) \frac{3}{2}^+$ tend to be compact.
