cacodyl group vs cacodyl radical

cacodyl group and cacodyl radical both are nouns.

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

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

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

Other synonyms of cacodyl group include arsenic group, cacodyl.

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