Nouns

(n)auraa sensation (as of a cold breeze or bright light) that precedes the onset of certain disorders such as a migraine attack or epileptic seizure
(n)aura, aureole, halo, nimbus, glory, gloriolean indication of radiant light drawn around the head of a saint
(n)air, aura, atmospherea distinctive but intangible quality surrounding a person or thing“an air of mystery”, “the house had a neglected air”, “an atmosphere of defeat pervaded the candidate's headquarters”, “the place had an aura of romance”