木棉[kiwata] cotton (material)
印棉[inmen] Indian cotton (raw)
棉花[menka] raw cotton

棉実油[menjitsuyu] cottonseed oil
棉実[menjitsu] cottonseed

お花見[ohanami] cherry blossom viewing
一花[hitohana] success
卯の花[unohana] bean-curd lees
雲鬢花顔[unbinkagan] beautiful woman (metaphorical)
黄花[kouka] chrysanthemum

火花[hibana] spark
花の木[hananoki] flowering tree
花瓣[hanabira] (flower) petal
花より団子[hanayoridango] dumplings rather than flowers