Lace weight vs sock/fingering weight yarn

[Fleece Corps]

I've never used lace weight yarn, and wonder if it can be used to knit socks...? How does the thickness of lace yarn compare to sock yarn? What size needles are typically used to knit lace weight yarn?
Thanks!

[suzeeq]

It's not so much the thickness of the sock yarn that makes it different from laceweight, but the fiber and construction too. Lace yarn is fairly light and less twisted than other yarns; sock yarns are usually sturdier with more of a twist so they stand up to the wear you need.