arsenic group vs cacodyl radical

arsenic group and cacodyl radical both are nouns.

Word	Noun	Adjective	Verb	Adverb
arsenic group	Yes	No	No	No
cacodyl radical	Yes	No	No	No

As nouns, arsenic group and cacodyl radical are synonyms defined as:

arsenic group and cacodyl radical: the univalent group derived from arsine

Other synonyms of arsenic group include cacodyl, cacodyl group.

arsenic group (noun)	cacodyl radical (noun)
the univalent group derived from arsine	the univalent group derived from arsine