As nouns the difference between chromatography and spectrography

is that chromatography is (chemistry) any of various techniques for the qualitative or quantitative separation of the components of mixtures of compounds; all characterised by the use of a mobile phase (gas or liquid) moving relative to a stationary phase (liquid or solid) - the differences between the rates of migration of the compounds between the two phases effects the separation while spectrography is (physics|chemistry) the process of using a spectrometer to produce a spectrograph.