It depends on what you mean by "soul."
The Bible treats spirit and soul differently. In every place I could find, soul was used to indicate personal attachments, aspirations and vulnerabilities. This sounds like ego -- the root of all evil. Ego is an action-reaction, physical, pseudo-self.
If this is what you mean, then there is likely very little difference, except the capacity for intelligent selfishness.
Spirit, on the other hand, is invulnerable and immortal. In most Homo sapiens, spirit is sound asleep. Thus the rescue mission. In fact, it seems from the narrative in the Bible that Homo sapiens was specifically created for this rescue mission to give the sleeping immortal spirit a temporary continuity of consciousness with which to plan out their escape from the darkness of spiritual blindness.
And, if the timeline discovered in Genesis is correct, Homo sapiens was the exception to the rule of evolution, because these body types have been around for 10.5 million years.
In fact, the mission was almost ruined by the corruption of flesh stopped by Noah's Flood, 27,970 BC. That's right when the animal went extinct and Homo sapiens was protected.