[citation needed] Idiosyncrasy is sometimes used as a synonym for eccentricity, as these terms "are not always clearly distinguished when they denote an act, a practice, or a characteristic that impresses the observer as strange or singular.
"[4] Eccentricity, however, "emphasizes the idea of divergence from the usual or customary; idiosyncrasy implies a following of one's particular temperament or bent especially in trait, trick, or habit; the former often suggests mental aberration, the latter, strong individuality and independence of action".
For example, the fact that the English word cab starts with the sound /k/ is an idiosyncratic property; on the other hand that its vowel is longer than in the English word cap is a systematic regularity, as it arises from the fact that the final consonant is voiced rather than voiceless.
Type B reactions have the following characteristics: they are usually unpredictable, might not be picked up by toxicological screening, not necessarily dose-related, incidence and morbidity low but mortality is high.
Thus, while securitisation in principle reduces the costs of idiosyncratic shocks, it ends up amplifying systemic risks in equilibrium.
[citation needed] In econometrics, "idiosyncratic error" is used to describe error—that is, unobserved factors that impact the dependent variable—from panel data that both changes over time and across units (individuals, firms, cities, towns, etc.