sludge vs ooze

sludge and ooze both are nouns.

Word	Noun	Adjective	Verb	Adverb
sludge	Yes	No	No	No
ooze	Yes	No	Yes	No

As nouns, sludge and ooze are synonyms defined as:

Other synonyms of sludge include goo, gook, goop, guck, gunk, muck, slime.

sludge (noun)	ooze (noun)
any thick, viscous matter	the process of seeping
the precipitate produced by sewage treatment	any thick, viscous matter

sludge (verb)	ooze (verb)
	release (a liquid) in drops or small quantities
	pass gradually or leak through or as if through small openings