carbon group element vs Group 14 element

carbon group element and Group 14 element both are nouns.

Word	Noun	Adjective	Verb	Adverb
carbon group element	Yes	No	No	No
Group 14 element	Yes	No	No	No

As nouns, carbon group element and Group 14 element are synonyms defined as:

carbon group element and Group 14 element: any chemical element that belongs to the carbon group.

Other synonyms of carbon group element include crystallogen, tetragen, tetrel.

carbon group element (noun)	Group 14 element (noun)
any chemical element that belongs to the carbon group.	any chemical element that belongs to the carbon group.