lol.. I can tell your a newb. It depends who you go through. There are hundreds different kinds of bud.
Northen Lights
AK-47
Bubblegum
White Ryno
White Widow
etc....etc...etc...

I say if your dealer goes by strains you're lucky. Most people including me. just go by lows, regs, highs. Schawg, Reg, Dank

Hydro. Some people will refer to hydro as a strain. Its not.. Its just a form of growing

Chronic.... Chronic is really weed snocapped......

hope that helps