Based on your new comment, if you simply want to copy information from one entity to the other, do the following in a microflow:
Your case appears to me as more of an association rather than enumeration. Shouldn’t you actually have one entity called project, another entity called area and they have one to one association. Now you can associate this area entity with the another entity as well( the second entity you mentioned).
However, if you are keen on keeping it as enumeration, the solution mentioned by Eline above would work