Deleting items from one collection in another collection

listB.RemoveAll(listA.Contains);


foreach (string str in listA.Intersect(listB))
  listB.Remove(str);

foreach(TypeA objectA in listA){
    listB.RemoveAll(objectB => objectB.Id == objectA.Id);
}

for (item i: LISTA) {
    removeItem(i, LISTB);
}


method removeItem(Item, List) {
    for (Item i: List) {
        if (Item == i)
            List.removeItem(i);
    }
}

foreach Object o in ListA
  If ListB.contains(o)
    ListB.remove(o)