spectrographic analysis vs spectroscopy

spectrographic analysis and spectroscopy both are nouns.

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

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

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

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

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