#similarity  the quality of being similar
  exclusion:  #dissimilarity
  supertype:  #sameness  the quality of being alike: "sameness of purpose kept them together"
  subtype:  #approximation.similarity  the quality of of being similar (especially close in value)
     subtype:  #approach.approximation  a close approximation; "the nearest approach to genius"
     subtype:  #sort  an approximate definition or example; "she wore a sort of magenta dress"; "she served a creamy sort of dessert thing"
  subtype:  #homogeny  (biology) similarity because of common evolution
  subtype:  #homology  the quality of being similar or corresponding in position or value or structure or function
  subtype:  #isomorphism  (biology) similarity of form or shape or structure
  subtype:  #alikeness__alikenes__likenes  similarity in appearance or character or nature between persons or things: "man created God in his own likeness"
     subtype:  #mirror_image__reflection__reflexion  a likeness in which left and right are reversed
     subtype:  #compare__equivalence__comparability  qualities that are comparable; "no comparison between the two books"; "beyond compare"
     subtype:  #resemblance  similarity in appearance or external or superficial details
        subtype:  #mutual_resemblance  symmetrical resemblance
        subtype:  #affinity.resemblance  inherent resemblance between persons or things
     subtype:  #spitting_image  a perfect likeness or counterpart
  subtype:  #parallelism__correspondence  similarity by virtue of correspondence
  subtype:  #uniformness__uniformnes  the quality of lacking diversity or variation (even to the point of boredom)
     subtype:  #homogeneousness__homogeneousnes  the quality of being similar or comparable in kind or nature; "there is a remarkable homogeneity between the two companies"
     subtype:  #consistence__consistency  a harmonious uniformity or agreement among things or parts
  subtype:  #analogue__analog__parallel  something having the property of being analogous to something else

No statement uses or specializes #similarity; click here to add one.