diremption, plangency

[Bethany K. Dumas]

A friend asks whether we have information about the use of these words
beyond what is in the OED:

First word: diremption
context: "...it is odd to say, as Danielou does of Gregory's late
exegetical writings:  'Once freed from administrative burdens and the heat
of *theological* controversy, Gregory now turned himself wholly towards
the life of the *spirit*.'  As Ronals Heine too has noted in his
dissertation on the *Life of Moses*, this is a questionable diremption."
Sarah Coakley. "Re-thinking Gregory of Nyssa: Introduction." in
_Rethinking Gregory of Nyssa_ ed. Sarah Coakley.  Blackwell Publishers.
2003  p. 6.

Second word:  plangency
Context: "The reader experiences not so much a clear vision along revealed
lines, as in some 'confessional' verse, but the sensation of a leashed,
subterranean grief, its continually rising pressure, a simultaneous
capping of that pressure, and, as a result, a tightly controlled poetic
atmosphere often electric with plangency."
Christopher Morgan.  _R. S. Thomas: Identity, environment, and deity_.
Manchester University Press.  2003. p. 7.

Bethany