Ad hominem and Person-to-person

Ad hominem adjective - Appealing to personal considerations (rather than to fact or reason).

Person-to-person and ad hominem are semantically related. In some cases you can use "Person-to-person" instead an adjective phrase "Ad hominem".

Person-to-person adjective - Involving direct communication or contact between persons or parties.

Ad hominem and person-to-person are semantically related. Sometimes you can use "Ad hominem" instead an adjective phrase "Person-to-person".