It is only in relation to a living entity that something can be good or evil. That doesn't mean it is subjective or grey, which is what the loaded questions on the other posts imply. The context is also important.

One example will suffice: I like peanuts. They are a source of nutrition for me and are therefore good. To some though they are evil, because they cause an allergic reaction, that can and will kill them.

This example is a fact that cannot be changed by anyone's feelings(subjectivism). It is therefore objective.

Based on all that I'll now answer the LOADED questions in the way they deserve.