Prefixes, suffixes, and roots. Polysyllabic words with origins steeped in Latin or Greek languages. Words are my friends, but these are like friends with whom you haven't spoken in a very long time; the rhythm is off, the quality . . stilted.
And then there are triggers. My mother spent a lot of time with medical providers throughout her entire life; the last twenty were especially prolific with visits, procedures, diagnoses, and medications.