No. Globe artichokes produce flower buds an dthe bit you eat is the flower head plus some of teh stalk. Fiddly but delicious as you have to remove the thictley "choke" to get at the heart. They produce their best heads on 2 and 3 year old plants so you have to nurture them through their first winter.
Cardoons are taller and it's usually the stem that's eaten.
Check out recipes for both to see if you fancy them. I can't get either through one of my winters.