Db vs atomic number 105

Db and atomic number 105 both are nouns.

Word	Noun	Adjective	Verb	Adverb
Db	Yes	No	No	No
atomic number 105	Yes	No	No	No

As nouns, Db and atomic number 105 are synonyms defined as:

Other synonyms of Db include dubnium, element 105, hahnium.

Db (noun)	atomic number 105 (noun)
a transuranic element with atomic number 105	a transuranic element with atomic number 105