atomic number 105 vs Db

atomic number 105 and Db both are nouns.

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

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

Other synonyms of atomic number 105 include dubnium, element 105, hahnium.

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