attention vs absorption

attention and absorption both are nouns.

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

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

attention (noun)	absorption (noun)
the work of providing treatment for or attending to someone or something	the mental state of being preoccupied by something
a courteous act indicating affection	complete attention; intense mental effort
a motionless erect stance with arms at the sides and feet together; assumed by military personnel during drill or review	(chemistry) a process in which one substance permeates another; a fluid permeates or is dissolved by a liquid or solid
the process whereby a person concentrates on some features of the environment to the (relative) exclusion of others	the process of absorbing nutrients into the body after digestion
the faculty or power of mental concentration	(physics) the process in which incident radiated energy is retained without reflection or transmission on passing through a medium
a general interest that leads people to want to know more	the social process of absorbing one cultural group into harmony with another