All three nouns are derived from aberrant, the latter two are not used often I suppose considering that spell check considered them misspelt.
What are the difference between the three? Are they interchangeable?
Learn English – aberration vs aberrance vs aberrancy
differencesword-choice
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Best Answer
Yes, you could probably get away with using them interchangeably. However, as always, there are shades of meaning at play.
An "aberration" is something aberrant, like one penny in a jar of nickels.
"Aberrance" is the degree to which something is aberrant. There would be more aberrance associated with a snail in a jar of nickels.
"Aberrancy" names the concept of being aberrant. There's so much aberrancy in the world--a jar of nickels with a penny and a snail in it isn't really all that strange, considering.