Group 14 element vs crystallogen

Group 14 element and crystallogen both are nouns.

Word	Noun	Adjective	Verb	Adverb
Group 14 element	Yes	No	No	No
crystallogen	Yes	No	No	No

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

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

Other synonyms of Group 14 element include carbon group element, tetragen, tetrel.

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