aureole vs nimbus

aureole and nimbus both are nouns.

Word	Noun	Adjective	Verb	Adverb
aureole	Yes	No	No	No
nimbus	Yes	No	No	No

As nouns, aureole and nimbus are synonyms defined as:

aureole and nimbus: an indication of radiant light drawn around the head of a saint

Other synonyms of aureole include aura, gloriole, glory, halo.

aureole (noun)	nimbus (noun)
an indication of radiant light drawn around the head of a saint	an indication of radiant light drawn around the head of a saint
the outermost region of the sun's atmosphere; visible as a white halo during a solar eclipse	a dark grey cloud bearing rain