Affinity, in etymology affinity is the opposite of infinity . These two words have the same root coming from the Latin: finis = end. “Affinity” meaning is near to the “finis” for example close to the “zero point” in a before assumed space. On the other hand, from the Latin, affinis = connected with, having things in common, and it's utilized to interpret the effective possibility that some substances can or can't mix together, in terms of sympathies and antip… (More on Affinity)