spectroscopy vs spectrographic analysis

spectroscopy and spectrographic analysis both are nouns.

Word	Noun	Adjective	Verb	Adverb
spectroscopy	Yes	No	No	No
spectrographic analysis	Yes	No	No	No

As nouns, spectroscopy and spectrographic analysis are synonyms defined as:

spectroscopy and spectrographic analysis: the use of spectroscopes to analyze spectra

Other synonyms of spectroscopy include spectrometry, spectroscopic analysis, spectrum analysis.

spectroscopy (noun)	spectrographic analysis (noun)
the use of spectroscopes to analyze spectra	the use of spectroscopes to analyze spectra