kieselguhr vs diatomite

kieselguhr and diatomite both are nouns.

Word	Noun	Adjective	Verb	Adverb
kieselguhr	Yes	No	No	No
diatomite	Yes	No	No	No

As nouns, kieselguhr and diatomite are synonyms defined as:

kieselguhr and diatomite: a light soil consisting of siliceous diatom remains and often used as a filtering material

Other synonyms of kieselguhr include diatomaceous earth.

kieselguhr (noun)	diatomite (noun)
a light soil consisting of siliceous diatom remains and often used as a filtering material	a light soil consisting of siliceous diatom remains and often used as a filtering material