Mt vs element 109

Mt and element 109 both are nouns.

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

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

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

Other synonyms of Mt include atomic number 109, meitnerium.

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