If we want to be pedantic about it, then let's call it an "Imperfect Substitute" https://en.wikipedia.org/wiki/Substitute_good#Imperfect_substitutes https://en

If we want to be pedantic about it, then let's call it an "Imperfect Substitute" https://en.wikipedia.org/wiki/Substitute_good#Imperfect_substitutes https://en.wikipedia.org/wiki/Substitute_good#Imperfect_subs...