The Spanish word 'oficina' (meaning 'office') comes from the Latin word 'officina', which meant 'workshop' or 'factory'. This Latin word developed from an earlier form 'opificina', which was formed by combining two Latin words: 'opus' meaning 'work' and 'facere' meaning 'to make' or 'to do'. So literally, the original meaning was a place where work is made or done. Over time, the meaning evolved from a general workshop to the modern concept of an office - a place where administrative work is done.

Some related Spanish words include 'oficio' (occupation or trade), 'oficial' (official), and 'oficiar' (to officiate). All these words share the same Latin root and relate to the concept of work or service. The word 'obra' (work, construction) is also distantly related, as it comes from the Latin 'opus'.

English speakers can easily remember 'oficina' by connecting it to similar English words like 'office', 'official', and 'officiate', which all come from the same Latin root. The English word 'opus' (meaning an artistic work) comes directly from the Latin 'opus' that helped form 'oficina'. Even the word 'operate' is distantly related, sharing the 'op-' root meaning 'work'.