Cotton is a fiber (from the cotton plant). Flannel is a finish or weave. Hence you can have flannel wool as well as cotton flannel - i.e wool made with flannel finish or cotton made with flannel finish. Hope this helops.
A very memorable song from Joni Mitchell that featured the line They paved paradise and put up a parking lot.. This best described places I remember growing up in Bloomington, MN in my teens where numerous places were torn down, most notably a restaurant I frequented that was replaced with a Park and Ride lot.
I'm turning off the real life, driving, that's right. I'm hittin' easy street in mud tires that's right. Yeah I'm chillin' on a dirt road, Laid back swervin' like I'm George Jones. Smoke rollin out the window, An ice cold beer sittin' in the console. Memory lane up in the headlights.