immersion vs specialism

immersion and specialism both are nouns.

Word	Noun	Adjective	Verb	Adverb
immersion	Yes	No	No	No
specialism	Yes	No	No	No

As nouns, specialism is a hyponym of immersion; that is, specialism is a word with a more specific, narrower meaning than immersion:

immersion: complete attention; intense mental effort
specialism: the concentration of your efforts on a particular field of study or occupation

Other hyponyms of immersion include centering, centring, direction, focal point, focus, focusing, focussing, study.

immersion (noun)	specialism (noun)
a form of baptism in which part or all of a person's body is submerged	the special line of work you have adopted as your career
the act of wetting something by submerging it	the concentration of your efforts on a particular field of study or occupation
complete attention; intense mental effort
sinking until covered completely with water
(astronomy) the disappearance of a celestial body prior to an eclipse