atomic number 104 vs element 104

atomic number 104 and element 104 both are nouns.

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

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

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

Other synonyms of atomic number 104 include Rf, rutherfordium, unnilquadium, Unq.

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