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Perturbation vs Perturbance - What's the difference?

perturbation | perturbance |

As nouns the difference between perturbation and perturbance

is that perturbation is agitation; the state of being perturbed while perturbance is perturbation.

perturbation

English

Noun

  • (uncountable) Agitation; the state of being perturbed
  • (countable) A small change in a physical system, or more broadly any definable system (such as a biological or economic system)
  • (countable, astronomy, physics) Variation in an orbit due to the influence of external bodies

    • perturbance

    English

    Noun

  • perturbation
  • *{{quote-journal, 2007, date=December 22, Heino F. L. Meyer-Bahlburg, Curtis Dolezal, Susan W. Baker and Maria I. New, Sexual Orientation in Women with Classical or Non-classical Congenital Adrenal Hyperplasia as a Function of Degree of Prenatal, Archives of Sexual Behavior, url=, doi=10.1007/s10508-007-9265-1, volume=37, issue=1, pages=
    • , passage=The developmental instability theory explains homosexuality as a perturbance of the complex processes of prenatal brain development by exogenous influences and was originally stimulated by findings of increased non-right handedness among homosexuals of both sexes (Lalumière, Blanchard, & Zucker, 2000 ), but attempts at finding an association of homosexuality with fluctuating asymmetry as a broader index of developmental instability have been unsuccessful (Rahman, 2005 ). }}