Some word meaning difference and word choice

Question

1. Is there any difference between go over there, come over there, come there, come here, go there, go here, go over and come over.
2. If it’s appropriate I ask customer “please come to the line at the counter to pay”,”please wait in that line at the counter.”?

Thanks a lot for anyone who could explain these to me.

Answer 1

go over there: Is correct, and used when you tell somebody standing next to you to go somewhere further away.

come over there: Wrong... You can say come over here, if you want somebody to come to a place located next to you.

go there: is rather slang form for go over there;

go here: not English, not logical. You can say go there or yet better go over there go over: Wrong... say: go over there. come over: Wrong... say: come over here.

“please come to the line at the counter to pay”: This is fine in the sense that it's English, but not natural. I may say: You may pay at the counter over there (smiling, of course), or more politely, would you please pay at the counter over there.

Hope this helps...