一粒[hitotsubu] (a) grain
一粒子既約[ichiryuushikiyaku] one particle irreducible (physics)
一粒種[hitotsubudane] an only child
雨粒[amatsubu] raindrop
穀粒[kokuryuu] kernel

素粒子[soryuushi] elementary particle
素粒子加速器[soryuushikasokuki] particle accelerator
大粒[ootsubu] large grain
長粒米[chouryuumai] long grain rice
麦粒腫[bakuryuushu] sty (on the eyelid)

粟立つ[awadatsu] to have gooseflesh (cold or horror)
雛罌粟[hinageshi] red poppy (Papaver rhoeas)
粟粒[awatsubu] millet grain
罌粟[keshi] poppy
粟粒結核[zokuryuukekkaku] miliary tuberculosis

濡れ手で粟[nuretedeawa] easy profit
罌粟粒[keshitsubu] poppy seed
濡れ手に粟[nureteniawa] easy profit
粟餅[awamochi] millet dough cake