element 109 vs meitnerium

element 109 and meitnerium both are nouns.

Word	Noun	Adjective	Verb	Adverb
element 109	Yes	No	No	No
meitnerium	Yes	No	No	No

As nouns, element 109 and meitnerium are synonyms defined as:

element 109 and meitnerium: a radioactive transuranic element, with atomic number 109

Other synonyms of element 109 include atomic number 109, Mt.

element 109 (noun)	meitnerium (noun)
a radioactive transuranic element, with atomic number 109	a radioactive transuranic element, with atomic number 109