• 木綿もめん — cotton cloth
• 綿花めんか — cotton plant
• 綿密めんみつ — detailed / precise
• 綿棒めんぼう — cotton swab
• 綿布めんぷ — cotton fabric
• 綿入わたいれ — padded clothing

綿 combines the radical 糸 (thread) with 咅, suggesting fibers bound together. This reflects cotton’s nature as a fluffy fiber spun into fabric. By extension, the kanji can also mean meticulous or continuous effort, as in 綿密 (precise).

この 服ふくは 木綿もめんでできています。
This clothing is made of cotton.

彼かれは 綿密めんみつな 計画けいかくを 立たてた。
He made a detailed plan.