The Spanish word 'bistec' comes from the English word 'beefsteak'. This is an interesting case of linguistic borrowing where Spanish adapted the English compound word to fit Spanish pronunciation patterns. The English 'beefsteak' itself is a compound of two words: 'beef' (which can be traced back to Latin 'bos' meaning 'ox' through Old French 'boef') and 'steak' (meaning 'slice of meat'). When this word was borrowed into Spanish, it was simplified to 'bistec', maintaining a similar sound but with Spanish phonological patterns.

There aren't many common Spanish words directly related to 'bistec' since it's a relatively recent borrowing from English. However, you might encounter variations like 'bife' in some Latin American countries, which comes from the same English word 'beef'.

The English words 'beef' and 'steak' are obviously related to 'bistec', since they are its direct ancestors. The word 'beef' comes from the same Latin root 'bos' (meaning 'ox') through Old French 'boef'. When combined with 'steak', it formed 'beefsteak', which was then borrowed into Spanish as 'bistec'. Understanding this connection can help you remember that 'bistec' refers specifically to a beef steak, rather than other types of meat.