By the definition that:
A homonym is a word or phrase that sounds the same as another
A synonym is a word or phrase that means the same or similar to another
A possible example of homonymous synonymic phrases may be:
"An ice-cold drink"
and
"A nice, cold drink"
My questions are:
1) Is there a proper name for these
2) Are there any other examples of these
3) If there are other examples can either a) You provide a list or b) You provide a place where I can find more
Thanks :)