I don't think you're wrong to believe there are two kinds of orgasms. There are many different kinds in my opinion, relating to different parts of the body. I personally mainly get off on clitoral and occasionally on g-spot orgasms.

The G-Spot is a little rough patch at the "top" of the vaginal walls. You can find it with your fingers and sometimes it's a bit far back there. It's not a part of your clit.

Clitoral orgasms are possible during intercourse... you just have to use your hands. =)