atomic number 66 vs dysprosium

atomic number 66 and dysprosium both are nouns.

Word	Noun	Adjective	Verb	Adverb
atomic number 66	Yes	No	No	No
dysprosium	Yes	No	No	No

As nouns, atomic number 66 and dysprosium are synonyms defined as:

atomic number 66 and dysprosium: a trivalent metallic element of the rare earth group; forms compounds that are highly magnetic

Other synonyms of atomic number 66 include Dy.

atomic number 66 (noun)	dysprosium (noun)
a trivalent metallic element of the rare earth group; forms compounds that are highly magnetic	a trivalent metallic element of the rare earth group; forms compounds that are highly magnetic