"Oddity" refers to something that is strange, unusual, or out of the ordinary. It describes something or someone that stands out from the rest because it is different or peculiar. Full definition
«Reservoir Development: Competing Rights of Horizontal and Vertical Developers and Other Oddities of Vertical Legal Principles Gone Sideways,» 58 Rocky Mt. Min. (crowleyfleck.com)
The array of oddities in strange vitrines is unmistakably Hirst — birds in glass cases, strange grey foetuses in jars, unmoving butterflies populate his painted works. (artlyst.com)
And one of the other oddities of the, of the — in Florida is the fact that the AR - 15 was something that somebody under the age of 21 can legally purchase, but not a handgun. (nbcnews.com)