Question

Definition of out breeding &crossbreeding

Answer 1

outbreeding
the mating of unrelated individuals, which often produces more vigorous offspring than the parents are in terms of growth, survival, and fertility.

Crossbreeding is defined as the process or the act of producing offspring particularly through mating two purebred individuals but come from different breeds, varieties, or even species. 

Answer 2

hey dear friend here your
answer ::
$- - - - - - - - -$
It is defined as ::
outbreeding devices are those by which self pollination can be prevented. 

for eg:

unisexual plant, unisexual flowers (corn), self incompatibility, stigma and anther mature at different times, no synchrony between stigma receptivity and pollen release, etc

2) We can say that cross breeding is a type of hybridization.