  We present a study of the kinematic and spectral ages of the Gigahertz-Peaked
Spectrum (GPS) source CTD~93. Measurements of the hot spot separation over 8.5
yr show evidence of an increase. The separation rate along the source axis is
0.34$\pm0.11c$ (H$_{0}$=72 km s$^{-1}$ Mpc$^{-1}$), which results in a
kinematic age of 2200$\pm$700 yr. Assuming that two hot spots are moving apart
at equal speeds, we derive an advance speed of 0.17$\pm0.06c$. The radio lobe
spectra show a high frequency steepening, as expected if energetic electrons
lose energy by synchrotron radiation. The spectral break decreases with the
distance from the hot spot in the northern component of CTD~93. This tendency
is expected from the basic scenario of radio lobe evolution involving particle
acceleration at the hot spots, with the radio lobes populated by high energy
electrons which have leaked from the hot spots. Although a core-jet morphology
for CTD~93 has previously been proposed, these results indicate that the
morphology is similar to that of Compact Symmetric Object (CSO). From the
spectral fits in the northern component we found a break frequency of 3.7 GHz
at the edge of the lobe. The resultant spectral age is $\sim$300 yr assuming
the equipartition magnetic field. This requires the advance speed of 0.26$c$,
which shows a good agreement of the hot spot motion of 0.17$\pm0.06c$. Our
results strongly support the hypothesis that CSOs are young radio sources.
