lysis vs convalescence

lysis and convalescence both are nouns.

Word	Noun	Adjective	Verb	Adverb
lysis	Yes	No	No	No
convalescence	Yes	No	No	No

As nouns, convalescence is a hypernym of lysis; that is, convalescence is a word with a broader meaning than lysis:

lysis: recuperation in which the symptoms of an acute disease gradually subside
convalescence: gradual healing (through rest) after sickness or injury

Other hypernyms of lysis include recovery, recuperation.

lysis (noun)	convalescence (noun)
(biochemistry) dissolution or destruction of cells such as blood cells or bacteria	gradual healing (through rest) after sickness or injury
recuperation in which the symptoms of an acute disease gradually subside