A person’s particular way of behaving, thinking, etc., especially when it is unusual; an unusual feature.
An abnormal physical reaction by an individual to a food or drug.
Wearing a raincoat, even on a hot day, is one of her idiosyncrasies. (Oxford)
The car has its little idiosyncrasies. (Oxford)
Wearing a raincoat, in hot day, is idiosyncrasy
car with little idiosyncrasies
Specializes
Mannerism
Conformity
Sameness
Idiosyncrasies