Well no too big difference in spoken E; you just need to figure what "out" and "over" mean respectively, both as prepositions. This is not a complete comparison: "Out" is not quite "out", it sounds near actually outside, out doors. The kids are playing out there. Actually "out there" mostly refers to an abstract "location" (usually with somewhat a negative sarcasm, kind of kidding): What are those big guys dealing with everyday out there? "Over" is real "over", it sounds distant in some cases. eg, you'll say to your abroad friend: How're you doing over there? And "over there" could be interchangeably equal to "out there": Who's the man over there? One tip: "Outta there" used as an adveb (ie, no verb conjunct with "out" that has a direct relation with it) is often seen and is wrong because "out" is a prep in "out there" where as an adverb in "out of there". Speaking of that, I myself often make the mistake. They'll get out of there. What do you do out there. (No direct relation with "do")

**Out there- 1) Usually meaning outside 2) It can also mean out in a large space/area Ex.1 Two people sitting in a cottage when it is snowing outside. One says to the other: It seems cool >out there< - Meaning it seems cold outside. Ex.2 The space, is there any life >out there<? - Meaning is there any life out in space? **Over there- Referers to a certain spot Ex 1. Look where I am pointing, is there a seagull >over there<? - Meaning is it a seagull in the place that was pointed out? Ex 2. In the square of Pisa there is a leaning tower. Yes but it is also a vast church >over there<. - Meaning there is also a great church in the square of Pisa Hope it was comprehensible... /Peps