The terms "variate" and "deviate" appear to be interchangeable:

> a random variable is a measurable function from a probability space to a measurable space of values that the variable can take on. In that context, and in statistics, those values are known as a random variates, or occasionally random deviates[1]

[1] https://en.wikipedia.org/wiki/Random_variate (3/8/2018)