faecalith vs stercolith

faecalith and stercolith both are nouns.

Word	Noun	Adjective	Verb	Adverb
faecalith	Yes	No	No	No
stercolith	Yes	No	No	No

As nouns, faecalith and stercolith are synonyms defined as:

Other synonyms of faecalith include coprolith, fecalith.

faecalith (noun)	stercolith (noun)
a hard mass of fecal matter	a hard mass of fecal matter