OK, call me confused. If amble means “(a) walk or move at a slow, relaxed pace” (noun and verb), how do we get to preamble being “part of a document or an introduction?” This is important stuff to know!
So I ambled over to my dictionary to check it out.
The words are related, both stem from Latin ambulare ‘to walk.’ Preamble took an extra step in late Latin praeambulus ‘going before.’ So I can see how the transition from specifically walking to something coming before came about.
Now you know!
PS: Regarding the picture, back in May 2015, I had only the one speed, “slow.”