  In the first half of this article we define a new weight homology functor on
Voevodsky's category of effective motives, and investigate some of its
properties. In special cases we recover Gillet-Soul\'e's weight homology, and
Geisser's Kato-Suslin homology. In the second half, we consider the notions of
"co-\'etale" and "reduced" motives, and use the notions to a prove a theorem
comparing motivic homology to \'etale motivic homology. Due to the first
author's Ph.D. thesis arXiv:1305.5349 we do not have to restrict to smooth
schemes.
