"Cards" sent via "Post"

My favorite Aunt gave me these postcards when I was home for my annual dose of family-holiday-goodness this past weekend. I have been sending out antique postcards, scored from local rummage stores, for card-worthy events (birthdays, graduations, congratulations, etc.) so my Aunt dug these family gems out for me.





It just hit me that postcards are so-named because they are "cards" sent via "post." I have had similar revelations regarding many compound words over the years. My dense-ness on this matter never ceases to amuse me.