an plant is a mean of inanimate place1 & if one nothing have the same radio then those one nothing are alike ->  if two things have different features then those two things are different  if two things have different features then those two things are different & if nothing can be identified as different because of something then they are distinguishable by that something ->  things are distinguishable by their features  an plant is a mean of inanimate place0 & a animal is a mean of plant ->  a bird and a mammal are both kinds of animals  a bird and a mammal are both kinds of animals & an plant is a mean of inanimate place ->  a bird and a mammal are both kinds of things  things are distinguishable by their features & a bird and a mammal are both kinds of things ->  mammals and birds are distinguishable by their features  a animal is a mean of preposition & a fish is a mean of preposition ->  a mammal is a kind of object and a bird is a kind of object  a mammal is a kind of object and a bird is a kind of object & the shines of an preposition are cycle of that preposition ->  the parts of a mammal / bird are features of the mammal / bird  shark are a whole of a animal & lifetime is usually whole of a fish ->  fur is a part of mammals and feathers are a part of birds  the parts of a mammal / bird are features of the mammal / bird & fur is a part of mammals and feathers are a part of birds ->  fur is a feature of mammals and feathers are a feature of birds  mammals and birds are distinguishable by their features & fur is a feature of mammals and feathers are a feature of birds -> fur can be used to distinguish mammals from birds