specialism

At the moment, sustainability and climate focus are still treated as a specialism, an optional sort of added-on element.
The Unexpected Ways Climate Change is Reshaping College Education|Ciara Nugent|April 16, 2021|Time
The result of such a process of evolution in the case of the communal animals is a strict specialism.
Man And His Ancestor|Charles Morris
Specialism in Society then, is, we think, one cause of our present state.
The Works of Robert Louis Stevenson - Swanston Edition Vol. XXII (of 25)|Robert Louis Stevenson
Specialism in Society then is, we think, one cause of our present state.
Lay Morals|Robert Louis Stevenson

Doubtless it has been noticed that our earlier scientists were as far removed as possible from the limitations of specialism.
A History of Science, Volume 1(of 5)|Henry Smith Williams
But though the present is a Scottish production, there is no narrow specialism in its scheme.
Old Cookery Books and Ancient Cuisine|William Carew Hazlitt

British Dictionary definitions for specialism

specialism

/ (ˈspɛʃəˌlɪzəm) /

noun

the act or process of specializing in something, or the thing itself

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012