uranyl group vs uranyl radical

uranyl group and uranyl radical both are nouns.

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

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

uranyl group and uranyl radical: the bivalent radical UO2 which forms salts with acids

Other synonyms of uranyl group include uranyl.

uranyl group (noun)	uranyl radical (noun)
the bivalent radical UO2 which forms salts with acids	the bivalent radical UO2 which forms salts with acids