vary between (someone and someone else)
and vary between something and something elseto fluctuate in choosing between people or things. In choosing a bridge partner, Sam varied between Tom and Wally. I varied between chocolate and vanilla cake for dessert.
vary between (something and something else)
to fluctuate between one thing and another. The daytime temperatures vary between 80 and 90 degrees. She varies between angry and happy.
vary (from something) (in something)
to differ from something. This one varies from that one in many ways. It varies from the other one a little.
vary from (something to something)
to fluctuate over the range from something to something. The colors vary from red to orange. It varies from warm to very hot during the summer.
vary with something
1. to be at variance with someone's figures or a sum or estimate. My figures vary with yours considerably. Her estimate varies with yours by a few dollars.
2. to change according to something. The rainfall in New York State varies with the season. His mood varies with the stock market average.