You most likely know the first two, and some with a clinical background know all three. Neologisms are made-up words that may have meaning to the speaker but not to anyone else. Consider the season of Spreem instead of Spring. Malapropisms are proper words used in an inappropriate context. My Merriam Webster dictionary app gives the example of Jesus healing the leopards.
Let me say that all of us can stumble over our own words and use neologisms or malapropisms under stressful circumstances, when we are nervous and self-conscious, as well as when we are intoxicated. But some individuals use them altogether too often. Donald Trump and Marjorie Taylor Green come to mind. When such aberrant speech patterns become common in a person’s speech, it is fair to wonder whether they represent paraphasias. A paraphasia is an aberration of speech that is most often associated with a neurological or psychiatric (neuropsychiatric) condition. Such conditions include psychoses (schizophrenia, bipolar illness, among others) as well as neurological conditions such as Fronto-temporal dementia, Korsakov’s psychosis (alcohol related brain damage), and other neuro-degenerative disorders, stroke, and brain trauma.
Now, while the use of neologism is cited as a finding in psychoses; most folks who have a diagnosable psychosis do not use neologisms; the hallmarks of psychosis are delusions and hallucinations. For the former, I offer such things as believing that liberals are an international cabal of baby eating pedophiles or perhaps that Bill Gates is trying to monitor all of your bodily functions by injecting you with nanobots that have been dispersed in COVID vaccines. Does that remind you of anyone? Maybe someone who refers to meat substitute products grown in peach tree dishes? For the latter (hallucinations), I would offer hearing voices that no one else can hear or seeing things that no one else can see and rarely smelling things that no one else can smell.
Paraphasias include these kinds of linguistic anomalies as well as others such as beginning a word with the correct stem and then completing it incorrectly. Consider the case of the word Origins that is delivered by the speaker as Oranges. You may remember that Donald Trump did that. When he attempted to correct himself, he kept saying oranges. This is an example of a perseverative paraphasia.
So, here we are with two bizarre political figures who totally mutilate the English language when they speak and who often espouse beliefs that are verifiably false. Are these people Delusional or Psychotic? Suffering from a neuropsychological illness? Maybe they are doing a political performance?
I do not know. All that I can say with confidence is that these people are not normal; they are not okay.