IPA: /ˈfʊtˌbæθ/
KK: /ˈfʊtˌbæθ/
A small container or area used for washing or cleaning the feet, often filled with water and sometimes used for relaxation or hygiene.
After a long day, she enjoyed soaking her feet in a warm footbath.
Footbath → It is formed from "foot" (from Old English "fōt", meaning the lower extremity of the leg) and "bath" (from Old English "baþ", meaning a washing or soaking). The word "footbath" refers to a bath specifically for the feet, used for relaxation or hygiene.
Think of soaking your 'feet' in a 'bath' — that's what a footbath is all about.
No commonly confused words.