atomic number 59 vs monazite

atomic number 59 and monazite both are nouns.

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

atomic number 59 (noun)	monazite (noun)
a soft yellowish-white trivalent metallic element of the rare earth group; can be recovered from bastnasite or monazite by an ion-exchange process	a reddish-brown mineral containing rare earth metals; an important source of thorium and cerium