  We present new $\nu_\mu\rightarrow\nu_e$, $\nu_\mu\rightarrow\nu_\mu$,
$\overline{\nu}_\mu\rightarrow\overline{\nu}_e$, and
$\overline{\nu}_\mu\rightarrow\overline{\nu}_\mu$ oscillation measurements by
the NOvA experiment, with a 50% increase in neutrino-mode beam exposure over
the previously reported results. The additional data, combined with previously
published neutrino and antineutrino data, are all analyzed using improved
techniques and simulations. A joint fit to the $\nu_e$, $\nu_\mu$,
$\overline{\nu}_e$, and $\overline{\nu}_\mu$ candidate samples within the
3-flavor neutrino oscillation framework continues to yield a best-fit point in
the normal mass ordering and the upper octant of the $\theta_{23}$ mixing
angle, with $\Delta m^{2}_{32} = (2.41\pm0.07)\times 10^{-3}$ eV$^2$ and
$\sin^2\theta_{23} = 0.57^{+0.03}_{-0.04}$. The data disfavor combinations of
oscillation parameters that give rise to a large asymmetry in the rates of
$\nu_e$ and $\overline{\nu}_e$ appearance. This includes values of the
CP-violating phase in the vicinity of $\delta_\text{CP} = \pi/2$ which are
excluded by $>3\sigma$ for the inverted mass ordering, and values around
$\delta_\text{CP} = 3\pi/2$ in the normal ordering which are disfavored at
2$\sigma$ confidence.
