short answer: yes, check page 129 for an example ;)
long one: Intersection data are information that not belong to any of two entities of the M2M relationship, but they also don't describe the relationship.
I.e. Teachers and Students
A teacher can have many students, a student many teachers. The hours of lesson of each teacher with each student can be intersection data.
Hours
Teacher Student Hours
A 1 2
A 2 2
B 1 4
B 2 1
But we can also imagine this relationship without hours, for example if we are interested only in which students are in the class of each Teacher.
Classes
Teacher Student
A 1
A 2
B 1
B 2
This table continues to describe the relationship, but without intersection data.
Classes is the Associative Entity of the relationship Teacher - Student.
Hope this makes things a bit easier.