Hornady manual vs handbook

[MEGSDAD]

Sorry, noob question.
new to re loading. Looking for another manual. i picked up the Hornady a couple weeks ago. i found both a Lyman manual and handbook on line.
curious as to what's the difference between the handbook and a manual?
Thanks

[OpenSightsOnly]

I have three reloading manuals since it's good to compare data.

The difference is going to be the bullet, powder, and rifle used for their testing.