absorption vs focussing

absorption and focussing both are nouns.

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

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

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

absorption (noun)	focussing (noun)
the mental state of being preoccupied by something	the concentration of attention or energy on something
complete attention; intense mental effort
(chemistry) a process in which one substance permeates another; a fluid permeates or is dissolved by a liquid or solid
the process of absorbing nutrients into the body after digestion
(physics) the process in which incident radiated energy is retained without reflection or transmission on passing through a medium
the social process of absorbing one cultural group into harmony with another