The word 'walk' has a number of interesting synonyms in English.
A 'constitutional' is a walk that is taken for one's health.
A 'pipe-opener' is British-speak for a walk in the open to get fresh air into the lungs.
Most people would agree that both constitutional and pipe-opener fall into the category of perambulation. That term for an act of walking about has its roots in the Latin ambulare, meaning to walk. Ambulare walked into plenty of other words too, including amble, meaning saunter, or an easy walk; obambulate, a now-obsolete verb meaning to walk about; wander, and also deamabulation, a noun naming the act of walking abroad or about; promenade.
The word promenade was borrowed into English from French, where promener means to take for a walk. Spanish loaned English the footing for a walking word, too: pasear. Pasear comes from paso, Spanish for step; in the southwestern part of the U.S., people use it to mean walk or excursion.
You may also know that the word 'constitutional' also means 'staatsrechtlich', but that's not our concern today!