I was excited today by “prodrome“, which is sexy and fancy and new to me. This breaks down to “pro” – ahead – and “drome”, which contains a notion of running or a race. So we could call a prodrome a “forerunner” if we were feeling Englishy.
We see drome in “hippodrome” – a racecourse for horses – and in “syndrome” – a running-together. So we could say that the defining feature of a syndrome is symptoms running together – or “concurrency” if we were feeling Latinate.