According to the Merriam-Webster dictionary, the meaning of disambiguate is “to establish a single semantic or grammatical interpretation for.”
When I was in the sixth grade, one of my teachers, who was a stickler with regard to the proper use of words, insisted that “mom” was a nickname that children often used when addressing their mothers. When people speak about their mothers, she insisted that the proper term is “my mother” rather than “my mom,” a term used frequently today.
In fact, there seems to be an aversion among today’s youth to using the word “mother” at all, as if there was some stigma to it, or that it is uncomfortable (not cool) to say it. It also has become commonplace for others to use “your mom” in place of “your mother” when referring to your female parent.
Consequently, by means of disambiguation, “mom” has become a synonym for “mother.” I think it is sad.