Boom! got it thank you!

Originally Posted by: ChristopherSchlegelI encourage you to work through GF2 starting with my tutorials on the basics of intervals & scales.

https://www.guitartricks.com/tutorial.php?input=362
https://www.guitartricks.com/tutorial.php?input=363

It seems like you might not be grasping these interconnected issues.

1. The distance between any two notes is called the interval.
2. And the interval can be any distance.
3. The interval (or distance between any two notes) can be a scale degree of a 2nd or a 3rd, etc.
4. The octave is just one of many possible interval. The octave is a scale degree of an 8th.
5. When you play two different notes together that is a harmony. Or when they sound together in a piece of music.
6. The interval distance between the two notes you play together is called "a harmony of that specific interval".

Maybe that helps?! :)