What in full terms is knock kneed and what in full terms is bow legged?

Question

My friend said that I was bow legged (gena valgum) and I wasn't sure what that was but then I looked it up on wikipedia but then I learned that that was kind of oppsite of what she said. She told me that my knees go inward at the knee cap, but then I looked up knock knees (genu valgum) but I don't really think that it is as severe as my knees truly are. Ten points to whoever can fully explain both "disorders". I need details such as how many inches, where on my leg I should look at, maybe some non x-ray pics could help.

Answer 1

http://www.orthosupersite.com/default.asp?page=view&rid=18385

Varus: (vara, varum) Angled inward, bent or twisted inward, as in cubitus varus, hallux varus, talipes equinovarus, genu varum, and coxa vara.

Valgus: (valga, valgum) Angled outward, bent or twisted outward, as in cubitus valgus, coxa valga, hallux valgus, and genu valgum.