Answer 1

'return' is used in a function to return the result of the function call.

e.g.:
def add(a, b):
return (a+b)

print (add(3, 5))

'yield' is used in generators.
A Python generator is a function that produces a sequence of results, which can be iterated.

e.g. of a generator :

def myrange(n):
for i in range(n):
yield i

for x in myrange(10):
print (x)