Language change over time --- Interesting pair of terms, thanks for this example! Yes, I would say that in the context which you describe, these two terms refer to the same type of activity/person but attribute slightly different qualities to each. Blasphemy and apostasy would also occupy the same semantic field.

I note that the etymology of 'heresy' derives from the Greek verb for choice / to choose. This is a further example of how meaning changes through connotations and eventually acquires a different referent over time (choice > choice of beliefs > choice of non-standard beliefs > opposing beliefs > treachery to God).

Sorcery today does not have the same meaning as the one you discuss, so it has changed over time too.

Source author: Biljana Scott biscott@diplomacy.edu