Vaisesika Sūtra 3.1.09

संयोगिसमवाय्येकार्थसमवायिविरोधि च ॥९॥

saṁyogisamavāyy ekārthasamavāyivirodhi ca ॥9॥

[संयोगि-समवायी (saṁyogi-samavāyī) - inhering in a conjunction; एकार्थ-समवायी (ekārtha-samavāyī) - inhering in a common substratum; विरोधि (virodhi) - opposed; च (ca) - and.]

It is opposed to what inheres in a conjunction and to what inheres in a common substratum.