Tc vs atomic number 43

Tc and atomic number 43 both are nouns.

Word	Noun	Adjective	Verb	Adverb
Tc	Yes	No	No	No
atomic number 43	Yes	No	No	No

As nouns, Tc and atomic number 43 are synonyms defined as:

Tc and atomic number 43: a crystalline metallic element not found in nature; occurs as one of the fission products of uranium

Other synonyms of Tc include technetium.

Tc (noun)	atomic number 43 (noun)
a crystalline metallic element not found in nature; occurs as one of the fission products of uranium	a crystalline metallic element not found in nature; occurs as one of the fission products of uranium