differece between del and remove in python lists code example

Example 1: del list python

>>> a=[1,2,3]
>>> a.remove(2)
>>> a
[1, 3]
>>> a=[1,2,3]
>>> del a[1]
>>> a
[1, 3]
>>> a= [1,2,3]
>>> a.pop(1)
2
>>> a
[1, 3]
>>>

A = [1,2,3,4]
del(A[1])
# A: [1,3,4]
B = {9,8,7,6}
B.remove("8")
# B: {9,7,6}