Does Stash Include Thread?

I've been trying so hard to use my stash rather than buy new fabric when I work on my quilts.  And I've been relatively good... hardly buying any new fabric this year or last, only when I absolutely had to to complete a quilt. 

But today I ordered 6 new spools of Aurifil in colors I didn't have before.  I am working on two applique blocks and just didn't have the thread to match to do the edge stitching on some of the applique pieces.  Aurifil isn't cheap, so six spools is a major investment, even at the discount price of $9.50 a spool.  (They are $12.00 each in the quilt shops, but the shops never carry the colors I needed this time, so I ordered online). 

So I started wondering about thread and whether or not it actually counts as stash too, and I think in my case it does - especially my Aurifil.  I'm sure there are people who have more than I do, but I DO have a lot of this wonderful thread.

Here is a pic of my Aurifil stash:

There are a few more spools that are sitting on machines at present that aren't in here, so there's actually even more... and a few spools in here that aren't Aurifil - like my invisible thread and a couple of Mettlers in colors I didn't have in Aurifil. 

So, I ask you, is this stash?  or just notions?  haha... I am in a quandary about this, to be honest.  If I have to count it as stash, I shouldn't be buying more, because I promised myself it was time to destash my life.  If it's 'just notions', I'm good and can buy more!

I know a lot of folks would say 60 is too young to worry about destashing, but honestly, I own too much fabric - I went a little crazy  buying the stuff when I first started quilting.  My husband will be retiring in 10 years or so, and we will probably be moving.  So I figure the less stash I have to move the better.

Thread is small, but it does add up... so I have this sticky question bugging me... Stash or not stash??