Noun

(identities)

Sameness, identicalness; the quality or fact of (several specified things) being the same.

* 1997 , Hydrothermal Vent Fauna'', in ''Advances in Marine Biology: The Biogeography of the Oceans , page 111:

The difference or character that marks off an individual from the rest of the same kind, selfhood.

*

A name or persona—the mask or appearance one presents to the world—by which one is known.

This criminal has taken on several identities .

Sense of who one is.

I've been through so many changes, I have no sense of identity .

This nation has a strong identity .

(algebra, computing) Any function which maps all elements of its domain to themselves.

(algebra) An element of an algebraic structure which, when applied to another element under an operation in that structure, yields this, second element.

Noun

(diagnoses)

(medicine) The identification of the nature and cause of an illness.

* {{quote-magazine, date=2012-01

, author=Philip E. Mirowski , title=Harms to Health from the Pursuit of Profits , volume=100, issue=1, page=87 , magazine= citation , passage=In an era when political leaders promise deliverance from decline through America’s purported preeminence in scientific research, the news that science is in deep trouble in the United States has been as unwelcome as a diagnosis of leukemia following the loss of health insurance.}}

The identification of the nature and cause of something (of any nature).

* Compton Reade

The quick eye for effects, the clear diagnosis of men's minds, and the love of epigram.

* J. Payn

My diagnosis of his character proved correct.

(taxonomy) A written description of a species or other taxon serving to distinguish that species from all others. Especially, a description written in Latin and published.

*

The repeated exposure, over decades, to most taxa here treated has resulted in repeated modifications of both diagnoses and discussions, as initial ideas of the various taxa underwent—often repeated—conceptual modification.