market research vs marketing research

market research and marketing research both are nouns.

Word	Noun	Adjective	Verb	Adverb
market research	Yes	No	No	No
marketing research	Yes	No	No	No

As nouns, market research and marketing research are synonyms defined as:

market research and marketing research: research that gathers and analyzes information about the moving of good or services from producer to consumer

market research (noun)	marketing research (noun)
research that gathers and analyzes information about the moving of good or services from producer to consumer	research that gathers and analyzes information about the moving of good or services from producer to consumer