Kind = genus.
wikipedia said:The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera.
Genus does not describe some unit of relatedness, but is instead a term carried forward from Linnaean taxonomy. About the only functional definition I could give for it would be a clade within a taxonomic family. Since family falls in to the same trap, would would end up walking it all the way back to a subset of living things. Kind, as it's being used, needs some definition such that we can identify what is and isn't a kind. Genus doesn't help you there.
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