Genotype versus phenotype.
An organism's genotype is the set of genes that it carries. An organism's phenotype is all of its observable characteristics — which are influenced both by its genotype and by the environment
to identify the difference
Genotype: take a cat for an example a straight ears or curly ears its because they have different genos reproducing
Phenotype: A change in the environment also can affect the phenotype. Although we often think of flamingos as being pink, pinkness is not encoded into their genotype. The food they eat makes their phenotype white or pink.