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Ionized gas and stellar kinematical parameters have been measured along themajor axis of 20 nearby disc galaxies. We discuss the properties of each samplegalaxy distinguishing between those characterized by regular or peculiarkinematics. In early-type disc galaxies ionized gas tends to rotate faster thanstars and to have a lower velocity dispersion, whereas in late-type spirals gasand stars show almost the same rotation velocities and velocity dispersions.Incorporating the early-type disc galaxies studied by Bertola et al. (1995),Fisher (1997) and Corsini et al. (1999), we have compiled a sample of some 40galaxies for which the major-axis radial profiles of both the stellar andgaseous components have been measured. The value of the stellar velocitydispersion measured at Re/4 turns out to be strongly correlated with the galaxymorphological type, while the gaseous velocity dispersion is not and sometimestakes values above the range expected from thermal motions or small-scaleturbulence.

Kinematic properties of gas and stars in 20 disc galaxies