The Spanish word 'vehículo' (meaning 'vehicle') comes from the Latin word 'vehiculum', which meant 'means of transport'. The Latin 'vehiculum' was formed by combining two elements: the verb 'vehere' meaning 'to carry or transport' and the instrumental suffix '-culum'. This suffix '-culum' was used in Latin to create nouns that referred to tools or instruments used for a particular action. So literally, 'vehiculum' meant 'a thing used for carrying'.

While 'vehículo' itself is a commonly used Spanish word, you might encounter related terms like 'vehicular' (relating to vehicles). The word is fairly straightforward and doesn't have many simpler related forms in Spanish, as it was borrowed directly from Latin and maintained its original meaning of a means of transport.

English speakers will find this word easy to remember as it's very similar to the English word 'vehicle'. Both words come from the same Latin root 'vehiculum'. Other related English words include 'vehicular' and 'convey' (which comes from Latin 'convehere', formed with the same root 'vehere'). The word 'vector' (a carrier of disease or a mathematical quantity with direction) also comes from the Latin 'vehere', showing how the concept of 'carrying' or 'transporting' evolved into different meanings in modern usage.