convalescence vs lysis

convalescence and lysis both are nouns.

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

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

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

Other hyponyms of convalescence include rally.

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