Rf vs atomic number 104

Rf and atomic number 104 both are nouns.

Word	Noun	Adjective	Verb	Adverb
Rf	Yes	No	No	No
atomic number 104	Yes	No	No	No

As nouns, Rf and atomic number 104 are synonyms defined as:

Rf and atomic number 104: a radioactive transuranic element which has been synthesized

Other synonyms of Rf include element 104, rutherfordium, unnilquadium, Unq.

Rf (noun)	atomic number 104 (noun)
a radioactive transuranic element which has been synthesized	a radioactive transuranic element which has been synthesized