ytterbite vs gadolinite

ytterbite and gadolinite both are nouns.

Word	Noun	Adjective	Verb	Adverb
ytterbite	Yes	No	No	No
gadolinite	Yes	No	No	No

As nouns, ytterbite and gadolinite are synonyms defined as:

ytterbite and gadolinite: a mineral that is a source of rare earths; consists of silicates of iron and beryllium and cerium and yttrium and erbium

ytterbite (noun)	gadolinite (noun)
a mineral that is a source of rare earths; consists of silicates of iron and beryllium and cerium and yttrium and erbium	a mineral that is a source of rare earths; consists of silicates of iron and beryllium and cerium and yttrium and erbium