and also has homo- or con- in it? It also needs to be a general word that can be used in, for example, a fiction literary story that has nothing to do with science: an imaginary thing, a word somehow like homogeneous or homologous. I need to say that something is “of the same material” as something else. If I had the word and could fill in the blank, my sentence should be:
X is _____ to Y
meaning X is made of the exact same material as Y.