As JimP already said, morse code is just a series of dots and dashes; it has nothing to do with graphics symbols.
Morse code doesn't use Unicode - the dots and dashes are mere ASCII characters (which any Unicode font includes), for which you could use ASCII 149 and ASCII 151, respectively. To create these via the keyboard, simply hold down the Alt Key while typing 0149 or 0151 as appropriate.

Finally, please don't post duplicate questions. Although your question here concerns Word, your other thread (https://www.msofficeforums.com/excel...bed-excel.html) is asking essentially the same thing. The answer would be the same for any Office application - Morse code is not of itself useful for any Office application.

__________________
Cheers,
Paul Edstein
[Fmr MS MVP - Word]