uranyl radical vs uranyl

uranyl radical and uranyl both are nouns.

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

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

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

Other synonyms of uranyl radical include uranyl group.

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