bastnaesite vs atomic number 59

bastnaesite and atomic number 59 both are nouns.

Word	Noun	Adjective	Verb	Adverb
bastnaesite	Yes	No	No	No
atomic number 59	Yes	No	No	No

bastnaesite (noun)	atomic number 59 (noun)
a yellow-to-brown mineral that is a source of rare earth elements	a soft yellowish-white trivalent metallic element of the rare earth group; can be recovered from bastnasite or monazite by an ion-exchange process