turnover vs turnover rate

turnover and turnover rate both are nouns.

Word	Noun	Adjective	Verb	Adverb
turnover	Yes	No	No	No
turnover rate	Yes	No	No	No

As nouns, turnover and turnover rate are synonyms defined as:

turnover and turnover rate: the ratio of the number of workers that had to be replaced in a given time period to the average number of workers

Other synonyms of turnover include employee turnover.

turnover (noun)	turnover rate (noun)
the act of upsetting something	the ratio of the number of workers that had to be replaced in a given time period to the average number of workers
the volume measured in dollars
a dish made by folding a piece of pastry over a filling
the ratio of the number of workers that had to be replaced in a given time period to the average number of workers