There is no such phrase as: "ad homonyms".
From Dictionary.com:
hom-o-nym [hom-uh-nim]
noun
1. Phonetics. a word pronounced the same as another but differing in meaning, whether spelled the same way or not, as heir and air; a homophone (def 1).
2. a word that is both a homophone and a homograph, that is, exactly the same as another in sound and spelling but different in meaning, as chase “to pursue” and chase “to ornament metal.”.
3. (loosely) a word of the same written form as another but of different meaning and usually origin, whether pronounced the same way or not, as bear “to carry; support” and bear “animal” or lead “to conduct” and lead “metal;” a homograph.
4. Obsolete. a namesake.
5. Biology. a name given to a species or genus that has already been assigned to a different species or genus and that is therefore rejected.
The Latin phrase you were/ are actually looking for also from Dictionary.com:
ad ho-mi-nem [ad hom-uh-nuh m -nem, ahd‐]
adjective
1. appealing to one's prejudices, emotions, or special interests rather than to one's intellect or reason.
2. attacking an opponent's character rather than answering his argument.
Word Origin and History for ad ho-mi-nem c.1600, Latin, literally "to a man," from ad "to" (see ad- ) + hominem, accusative of homo "man" (see homunculus ).<>P> A perfect example is your comment:
Changing the meaning is so...typical. NOT a fluke, but at least there is consistency with your manner of debate.
Mary is dead; and anyone who disagrees with this is...