holmium vs atomic number 67

holmium and atomic number 67 both are nouns.

Word	Noun	Adjective	Verb	Adverb
holmium	Yes	No	No	No
atomic number 67	Yes	No	No	No

As nouns, holmium and atomic number 67 are synonyms defined as:

holmium and atomic number 67: a trivalent metallic element of the rare earth group; occurs together with yttrium; forms highly magnetic compounds

Other synonyms of holmium include Ho.

holmium (noun)	atomic number 67 (noun)
a trivalent metallic element of the rare earth group; occurs together with yttrium; forms highly magnetic compounds	a trivalent metallic element of the rare earth group; occurs together with yttrium; forms highly magnetic compounds