def greet_user(name):  # name is a parameter here in the function. It is a place holder for receiving info.
    print(f'whats up {name}')
    print('Are you high!')


print('Start')
greet_user("Ramesh") 
# Here Ramesh , Hero are the arguments means actual piece of info
# which is passed to the function. This is a function call
greet_user("Hero")
print('Done')
