a structure is a kind of feature & a whole of a inanimate place is a artificial disorganized ->  a part of something is a feature of something  a part of something is a feature of something & branch are a whole of a vegetable -> roots are a feature of plants roots are a feature of plants  grass is a kind of green plant & a tree is a kind of plant -> a specific and water are both conserve of animal a tree and grass are both kinds of plants  roots are a feature of plants & a tree and grass are both kinds of plants -> branch are a owl of both speck and water roots are a feature of both trees and grass  branch are a owl of both speck and water & if two things have the same features then those two things are alike -> a tree and grass are alike because they both have roots