A genus is a universal essential concept shared by more than one species; it is not a merely accidental feature. Humans and horses share “animal”; humans and trees share the broader “growing body”; humans and stones share the still broader “body.” Essential commonality comes in levels.
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Recall what genus means
Proximate and Remote Genus and Differentia
A genus is a universal essential concept shared by more than one species; it is not a merely accidental feature. Humans and horses share “animal”; humans and trees share the broader “growing body”; humans and stones share the still broader “body.” Essential commonality comes in levels.