absorption vs focus

absorption and focus both are nouns.

Word	Noun	Adjective	Verb	Adverb
absorption	Yes	No	No	No
focus	Yes	No	Yes	No

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

Other hyponyms of absorption include centering, centring, direction, focal point, focusing, focussing, specialism, study.

absorption (noun)	focus (noun)
the mental state of being preoccupied by something	maximum clarity or distinctness of an image rendered by an optical system
complete attention; intense mental effort	maximum clarity or distinctness of an idea
(chemistry) a process in which one substance permeates another; a fluid permeates or is dissolved by a liquid or solid	the concentration of attention or energy on something
the process of absorbing nutrients into the body after digestion	a fixed reference point on the concave side of a conic section
(physics) the process in which incident radiated energy is retained without reflection or transmission on passing through a medium	a point of convergence of light (or other radiation) or a point from which it diverges
the social process of absorbing one cultural group into harmony with another	a central point or locus of an infection in an organism
	special emphasis attached to something

absorption (verb)	focus (verb)
	become focussed or come into focus
	put (an image) into focus
	direct one's attention on something
	bring into focus or alignment; to converge or cause to converge; of ideas or emotions
	cause to converge on or toward a central point