Here are several good synonyms for the word “similarity” (depending on the context you’re using it in):ResemblanceLikenessAnalogyParallelCorrespondenceAffinityRelationComparabilityUniformitySamenessEach one has a slightly different shade of meaning. For example, resemblance and likeness are often used for physical appearance, while analogy and parallel are more for abstract ideas or situations[tex].[/tex]