There's a big difference. On my way to spend the weekend with the grands on Friday, I heard an expert explain the origins of the word "radio" on Science Friday (NPR). He used the word "radio-telegraphy" (te-LA-gra-fee), and things clicked.
G'head and read it. You can spare a few minutes to learn something...well, old.
(BTW, Math Hesch's ring was two long and two short, and it's become the family signal ☺ ).