motion study vs work study

motion study and work study both are nouns.

Word	Noun	Adjective	Verb	Adverb
motion study	Yes	No	No	No
work study	Yes	No	No	No

As nouns, motion study and work study are synonyms defined as:

motion study and work study: an analysis of a specific job in an effort to find the most efficient method in terms of time and effort

Other synonyms of motion study include time-and-motion study, time-motion study, time and motion study, time study.

motion study (noun)	work study (noun)
an analysis of a specific job in an effort to find the most efficient method in terms of time and effort	an analysis of a specific job in an effort to find the most efficient method in terms of time and effort