The Spanish word 'vejez' (meaning 'old age') has an interesting journey from Latin roots. It starts with the Latin word 'vetus' meaning 'old'. This became the diminutive form 'vetulus' (meaning 'little old') in Latin, which then evolved into the Vulgar Latin 'veclus'. From there, it developed into the modern Spanish adjective 'viejo' (meaning 'old'). The final form 'vejez' was created by adding the Spanish suffix '-ez', which forms nouns indicating a quality or state of being. So 'vejez' literally represents the state or quality of being old.

The most obvious related Spanish word is 'viejo' meaning 'old', which is actually the base word from which 'vejez' is formed. This is a very common Spanish adjective that you'll encounter frequently. You can see how adding the suffix '-ez' transforms the adjective 'viejo' (old) into the noun 'vejez' (old age). This same pattern works with other Spanish word pairs like 'tímido' (timid) → 'timidez' (timidity) and 'estúpido' (stupid) → 'estupidez' (stupidity).

While there aren't any common English words that come directly from the same Latin root 'vetus', English does have some academic or technical terms that share this ancestry. For example, the word 'veteran' (someone with long experience) comes from Latin 'veteranus', which is related to 'vetus'. Similarly, 'inveterate' (having a particular habit, activity, or interest that is long-established and unlikely to change) also comes from this Latin root.