input() returns a string. When you iterate over a string, it iterates over single characters. I.e.
my_str = "abcdef" for e in my_str: print(e)
a b c d e f
What you really want is to iterate over words, which can be done by splitting the string on whitespaces. So you can do this via
words_to_translate = input("Please type the words to translate ").split() # splits on whitespace by default (i.e. space/tabs) for word in words_to_translate: # rest of the code
CLICK HERE to find out more related problems solutions.