Seems like the way to disentangle the two is to look a the people replacing those that move out. If they're roughly the same economically then it's the churn of

Seems like the way to disentangle the two is to look a the people replacing those that move out. If they're roughly the same economically then it's the churn of being a poor person in a capitalist society if the income is going up particularly if it's a sharp increase and rents are rising then it's gentrification.