I ran across the word hypocoristic for the first time today, in an article on gender in languages and its relationship to sex:
In several of these dialects, nouns denoting girls and unmarried women (irrespective of age), and including hypocoristics, are of neuter gender.
I had never heard this word, so Googled it. Wiktionary and Wikipedia both have articles on the term, but from their definitions and examples, I can't seem to tell if it is a synonym for diminutive, or if it merely overlaps. Other sources don't help either: “Denoting, or of the nature of, a pet name or diminutive form of a name.”
So, I'm wondering if there is a difference between hypocoristic or hypocorism and diminutive (when used to refer to a form of a word or name; obviously dimunitive can also refer to something physical, while hypocorism/hypocoristic appear to exclusively refer to words or names), or if they are just synonyms in that usage.