Đống: pile, heap (더미) Hàng đống: many many, a lot of, a huge quantity (더미가 될 정도로 많다) ~Chính vì thế chúng mới gây ra cho chúng ta hàng đống phiền hà. ~ Therefore they cause us a huge quantity of troubles(many many troubles) .... Lần khân: prolong something, drag on something ~Thôi đừng lần khân nữa, khó chịu lắm. ~ Stop dragging on it, that's annoying

"hàng đống" this means " have some of problems that we have a solution for its, and " lần khân" this means " have one problem or one work that we have a talkative, again and again. "Hàng đống" synonym "many, much, a lot of" "Lần khân" synonym "talkative, again and again one, twiec or many of time.