  We present the results of the correlation between the nuclear 2-10 keV X-ray
and radio (at 2cm, 6cm and 20cm) luminosities for a well defined sample of
local Seyfert galaxies. We use a sample of low luminosity radio galaxies
(LLRGs) for comparison. In both Seyfert and LLRGs samples, X-ray and radio
luminosities are significantly correlated over 8 orders of magnitude,
indicating that the X-ray and radio emission sources are strongly coupled.
Moreover, both samples show a similar regression slope, L(X)$\propto$
L(R)^(0.97), but Seyfert galaxies are three orders of magnitude less luminous
in the radio band than LLRGs. This suggests that either similar physical
mechanisms are responsible for the observed emission or a combination of
different mechanisms ends up producing a similar correlation slope. Indeed, the
common belief for LLRG is that both the X-ray and radio emission are likely
dominated by a relativistic jet component, while in Seyfert galaxies the X-ray
emission probably arises from a disk-corona system and the radio emission is
attributed to a jet/outflow component. We investigate the radio loudness issue
in the two samples and find that the Seyfert galaxies and the LLRGs show a
different distribution of the radio loudness parameters. No correlation is
found between the luminosity and the radio loudness, however the latter is
related to the black hole mass and anti-correlated with the Eddington ratio.
The dichotomy in the radio loudness between Seyfert and LLRG observed down to
low Eddington ratios, L(2-10)/L(Edd) $\sim$ 10^(-8), does not support the idea
that the origin of the radio loudness is due to a switch in the accretion mode.
