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.
Here's the transcript:
Science Diction--The Origin Of The Word ‘Radio’
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 ☺ ).
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