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Multiple Meanings

The two cities play homologous roles for their respective states.
similar — in position, structure, function, or origin

Some specialized meanings of homologous include:
  • anatomy or evolution:  having the same origin but different function such as human arms and bat wings
  • genetics:  referring to the relationship between a pair of chromosomes
  • chemistry:  referring to the relationship between a series of organic compounds that differ by a constant increment, for instance by the addition of a CH2 group
  • of blood transfusions:  from a compatible donor other than one’s self

See the related Wikipedia page for detail on these or other specialized senses of homologous.
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