agnate vs akin

agnate

adj
  • allied; akin 

  • Related to someone by male connections or on the paternal side of the family. 

  • Having a similar semantic meaning. 

noun
  • A relative whose relation is traced only through male members of the family. 

  • A statement having a similar meaning to another, but a different structure. 

  • Any paternal male relative. 

akin

adj
  • Allied by nature; similar; partaking of the same properties; of the same kind. 

  • Of the same kin; related by blood. 

How often have the words agnate and akin occurred in a corpus of books? (source: Google Ngram Viewer )