nonliving things are not made of cells
plant_gamete is noncancerous_cell. nonuniformity is dissimilarity. nonexistence is nonbeing. human_gametes is noncancerous_cell. noncancerous_cell is tangible_thing. nonproliferation is prevention. non_natural_inanimate_thing is finite_spatial_thing. gamete is noncancerous_cell. non_vertical_well is tangible_thing. non_natural_inanimate_thing is unnatural_thing.