  Broad meson phenomenology in vacuum is discussed in a single model containing
scalar, pseudoscalar, vector and axial-vector states both in the non-strange
and strange sectors. Emphasis is given to search for quark-antiquark
(quarkonium) states in the scalar and axial-vector channels. In particular, the
work examines the question whether the scalar quark-antiquark states are found
in the energy region below or above 1 GeV in the physical spectrum. Contrarily
to the naive expectation, the mentioned states are found in the region above 1
GeV. Additionally, the axial-vector isotriplet state $a_1(1260)$ is described
as a quarkonium. These results have consequences for the building of order
parameters for the chiral-symmetry breaking of Quantum Chromodynamics (QCD).
