Yes, thank her for this piece on the difference between lawn, muslin, and voile. I'm sure I'm not the only one who has been confused lately.
She also covers other similar fabrics such as gauze, net, organdy, organza, batiste, and others in a longer post here. However, that one starts to confuse me so I'll just stick with the 'quick and dirty' version above. Most importantly, remember that the bolt names of the fabric at Jo-Ann or Hancocks might not accurately reflect what kind of weave the fabric actually is.