ruthenium vs atomic number 44

ruthenium and atomic number 44 both are nouns.

Word	Noun	Adjective	Verb	Adverb
ruthenium	Yes	No	No	No
atomic number 44	Yes	No	No	No

As nouns, ruthenium and atomic number 44 are synonyms defined as:

ruthenium and atomic number 44: a rare polyvalent metallic element of the platinum group; it is found associated with platinum

Other synonyms of ruthenium include Ru.

ruthenium (noun)	atomic number 44 (noun)
a rare polyvalent metallic element of the platinum group; it is found associated with platinum	a rare polyvalent metallic element of the platinum group; it is found associated with platinum