  We show that in the construction of continuum equations for competitive
growth processes that are a mixture of random deposition and a correlation
process, a distinction must be made within a \textit{single universality class}
between depositions that do and do not create voids in the bulk. Within these
subclasses the bulk morphology is reflected in the surface roughening via
\textit{nonuniversal} prefactors in the universal scaling of the surface width.
