congeneracy
/kɑnˈdʒɛnərəsi, -ˈdʒɛnərəsi/Definitions
1. noun
the quality or state of being a congeners, or being of the same kind or nature
“The congeneracy of the two plant species was a key factor in their ability to thrive in the same environment.”
2. noun
a relationship or association between people or things of the same kind or nature
“The congeneracy between the two companies was a major factor in their decision to merge.”