atomic number 50 vs tetragen

atomic number 50 and tetragen both are nouns.

Word	Noun	Adjective	Verb	Adverb
atomic number 50	Yes	No	No	No
tetragen	Yes	No	No	No

As nouns, tetragen is a hypernym of atomic number 50; that is, tetragen is a word with a broader meaning than atomic number 50:

atomic number 50: a silvery malleable metallic element that resists corrosion; used in many alloys and to coat other metals to prevent corrosion; obtained chiefly from cassiterite where it occurs as tin oxide
tetragen: any chemical element that belongs to the carbon group.

Other hypernyms of atomic number 50 include metal, metallic element, carbon group element, crystallogen, Group 14 element, tetrel.

atomic number 50 (noun)	tetragen (noun)
a silvery malleable metallic element that resists corrosion; used in many alloys and to coat other metals to prevent corrosion; obtained chiefly from cassiterite where it occurs as tin oxide	any chemical element that belongs to the carbon group.