Usage patterns
〈物〉に綿を入れるto stuff something with cotton padding
They stuff the futon with cotton padding to make it.
綿を摘むto pick cotton (from the plant)
Farmers pick cotton every autumn.
綿のように疲れるto become utterly exhausted (as limp as cotton)
After walking around all day, I was completely worn out.
綿100%の〈物〉made of 100% cotton
This shirt is 100% cotton.
Expressions
インドワタノキIndian silk-cotton tree; Bombax ceiba