Hear people saying that a leader can always be a boss but not every boss can be a leader? Although leaders and bosses have nearly identical definitions, in effect, they are different in today’s competitive world. Westhill Consulting and Employment, differentiates the two. Just the term “leader” evokes more positivity than that of “boss.” While a boss is mostly concerned with outcomes, a leader is concerned with the overall process and the people who work for the outcome.