seepage vs exudation

seepage and exudation both are nouns.

Word	Noun	Adjective	Verb	Adverb
seepage	Yes	No	No	No
exudation	Yes	No	No	No

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

seepage: the process of seeping
exudation: the process of exuding; the slow escape of liquids from blood vessels through pores or breaks in the cell membranes

Other hyponyms of seepage include transudation.

seepage (noun)	exudation (noun)
the process of seeping	the process of exuding; the slow escape of liquids from blood vessels through pores or breaks in the cell membranes
	a substance that oozes out from plant pores