Intelligence is somewhat measurable, with some nice big error bounds and a big asterisk for the particularly stark replication problem in psychology.
You can define genius as a mark on the IQ scale, but that certainly isn't the definition being used when people use the word in conversation. That conversational form of genius is the social construct.
You can define genius as a mark on the IQ scale, but that certainly isn't the definition being used when people use the word in conversation. That conversational form of genius is the social construct.