Great point, Brendan. Better to use a word or phrase that is accurate and precise, even if it is harder to understand. .
Thanks, and I would add that pedagogically, it is better to use a term that the ‘student’ does not understand instead of one that they incorrectly presume that they understand. It encourages them to investigate the true meaning of the term, rather than using the incorrect definition that they already understand
An example of this would be " One in Nature with the Father". The ‘vernacular’ understanding of the term ‘nature’ is one more related to wildlife biology than Aristotelian ‘substance’. It leaves the average person with a mental image of the Father, Son and Holy Spirit somehow interacting in a sylvan setting.
Likewise ‘One in Essence’ give more of an impression of a box of oils on the bathroom shelf than an underlying
Thus any teacher of the Faith has to take in account that the purpose of the Creed is not necessarily to use words that might be misinterpreted due to secular use of a word or phrase, but rather conveys the underlying Truth as the Church teaches it.
Look how many people, even on this forum, object to the Church’s description of homosexual acts as being ‘unnatural’. Those objectors point towards instances of homosexual acts within the animal kingdom as ‘proof’ that the acts are ‘natural’. This false use of the word totally misses the Church use of ‘nature’.
Hence why the Church deliberately uses terms such as Consubstantial or Transubstantial. It is because it avoids any misunderstanding that might arise with false understands of more common words.
Both of those require the teacher to bring forward philosophical concepts, no matter what verbiage is used, and after those concepts have been taught, any objections to the term(s) then disappear.
Which is why the Council had no objections to using the terms, in either Latin or Greek, they operated under the assumption that the were addressing an audience that had the familiarity with the concepts.