corona vs cigar

corona and cigar both are nouns.

Word	Noun	Adjective	Verb	Adverb
corona	Yes	No	No	No
cigar	Yes	No	No	No

As nouns, cigar is a hypernym of corona; that is, cigar is a word with a broader meaning than corona:

corona (noun)	cigar (noun)
a long cigar with blunt ends	a roll of tobacco for smoking
(anatomy) any structure that resembles a crown in shape
the outermost region of the sun's atmosphere; visible as a white halo during a solar eclipse
an electrical discharge accompanied by ionization of surrounding atmosphere
one or more circles of light seen around a luminous object
(botany) the trumpet-shaped or cup-shaped outgrowth of the corolla of a daffodil or narcissus flower
a viral disease caused by SARS-CoV-2 that caused a global pandemic in 2020