The Spanish word 'mañana' comes from the Latin word 'mane' meaning 'morning'. This evolved into the Vulgar Latin term 'maneana' meaning 'early', which was then used in the phrase 'hora maneana' meaning 'early hour'. Over time, this phrase evolved into the Spanish word 'mañana', which can mean both 'morning' and 'tomorrow' - a semantic extension that makes intuitive sense since tomorrow is the next morning to come.

Some related Spanish words include 'madrugada' (early morning), 'matinal' (morning, relating to morning), and 'matutino' (morning, early). While these words come from different Latin roots relating to morning, they form part of the Spanish vocabulary family relating to morning time.

While English 'morning' is not etymologically related to 'mañana' (it comes from Germanic roots), there are some English words borrowed from Latin that share the same root. For example, 'matinal' and 'matinee' (as in a morning or afternoon performance) come from the same Latin root 'mane'. The word 'matins', referring to morning prayer services, also shares this connection.