Unity: the state of being united or joined as a whole; a thing forming a complex whole. I like this word when it refers to Christians, or a local body of the church, or the visible church worldwide. We are united into a complex whole by Christ. "For as we have may members in one body, but all the members do not have the same function, so we, being many, are one body in Christ and individually members of one another." (Romans 12:4-5 NKJV) Unity is something God does and a gift he gives. When Christians have it, it is a beautiful thing.
Uniform: of a similar form or character to another or others. This word often describes the expectation within Christian groups, churches, organizations. This is not what God defines as the body of Christ. He specifically says that we are different with differing gifts and functions. We are to be thankful for the fact that we are all different. We do not all need to classically educate at day schools, we do not all need to be home educating, we do not all need to wear dresses all the time, we do not all need to be intellectuals, we do not all need to be exactly the same. We do need to take our gifts and serve one another and to love our neighbor as we love ourselves, graciously. Unfortunately as Christians we seem better at wanting uniformity and being drawn to those who are like ourselves and being threatened by those who are not. But God wants us to delight in unity, not uniformity.
----posted by Queen Lucy