I refer to this question (which is protected, but I cannot answer because it is 'protected') What are the differences between tone, note, and pitch?.
In it, Matthew Read accepts Kos' comment "I believe that note is more than a "named pitch", because it also carries information about the temporal length... Doesn't it? – Kos" and agrees that "note" is a named pitch with temporal information. Thus, 'tone' could be defined as (named/unnamed) note with information about timbre. A sound produced electronically consisting of a note on a single pitch could be a tone - perhaps a 'pure' tone, one without overtones. All other methods of producing sound have overtones so calling them whole tone or semitone on any instrument is correct.