Yes
no you can not feed deer to a goat it would just probably die.
its the spider-deer it is when a deer and a spider produce offspring.
I think you call a female deer a doe. A female goat is a nanny
Deer meat is called venison. It tastes different from goat meat.
A doe is the name that can refer to a goat or a deer so it's both.
No.
No, sheep produce lambs, and goats produce kids. Both offspring is of different genus as with the parents.
It is simply the process of breeding mature doe's and raising (feeding and caring for) the offspring to produce either milk or meat.
A "kid"
There is a very slight the difference between goat and deer browsing. Deer browsing is entirely done by deer but for the goats, browsing may be facilitated since they are domesticated.
The antelope is more closely related to the goat, both being of the family bovidae, whereas the deer is of the family cervidae.
Lambs and kids