di·a·chron·ic (adj.): Of or concerned with phenomena as they change through time.
par·a·digm (noun): A typical example or pattern; an example serving as a model.
Today's a good day to get married.
I have my something old; something new; something blue; and a sixpence for my shoe. I never did find something to borrow, but that's the silliest of that rhyme anyway.