Grain

graan

(harvested seeds of various grass-related food crops)

graan

(crops from which grain is harvested)

graankorrel

(single seed of grain)

grein

(unit of mass notionally based on grain's weight)

koren

(harvested seeds of various grass-related food crops)

korrel

(single particle of a substance)

korrel

(materials: region within a material having a single crystal structure or direction)

nerf

(linear texture of material or surface)