Freakishness noun – An inclination to sudden illogical changes of mind, ideas, or actions. Interestingness and freakishness are semantically related. In some cases you can use "Interestingness" instead a noun "Freakishness".
Interestingness noun – The power of attracting or holding one's attention (because it is unusual or exciting etc.). Freakishness and interestingness are semantically related. Sometimes you can use "Freakishness" instead a noun "Interestingness".