Definitions for "Canonical form"
a basic form that a sentence in natural language can be reduced to
a compact form of the mathematical model that involves minimal number of parameters
In a mathematical context this term is taken to mean a generic or basic representation. Canonical forms provide the means to compare two expressions without falling into the trap of trying to compare "apples" with "oranges".
Keywords:  sounds, words, meanings, different, set
a set of words with the same sound but different meanings different sounds but the same meanings