specialism

nouns

the concentration of your efforts on a particular field of study or occupation
specialism
is derived from
specialist
is derived from
specialist
is a type of (narrower)
complete attention; intense mental effort
absorption, concentration, engrossment, immersion
the special line of work you have adopted as your career
"his specialization is gastroenterology"
specialisation, specialism, speciality, specialization, specialty
is derived from
specialist
is derived from
specialist