different between intermediator vs intermediatory

English

intermediator (plural intermediators)

intermediate (“to act between others, to mediate”, verb) +? -ory (suffix forming adjectives)

intermediatory (not comparable)

Having the function of intermediating; mediatory.
- 1851, Fraser’s Magazine XLIV, page 608:
  Animosities are softened by the intermediatory offices of an unpremeditated libation.
- 1992, Philip R. Davies, In Search of ‘Ancient Israel’, chapter vii, page 124:
  There is no necessary, far less automatic, connection between intermediatory behaviour and the production of literature.

“Intermediatory, a.” listed on page 406/1 of § 2 (I) of volume V (H–K, ed. James Augustus Henry Murray, 1901) of A New English Dictionary on Historical Principles (1st ed.)

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