The Spanish word 'pascua' (meaning 'Easter') has a fascinating journey that begins with the Hebrew word 'pesaḥ', meaning 'to pass over' or 'Passover'. This Hebrew word was borrowed into Greek as 'páscha', maintaining its connection to Passover. The word then entered Latin as 'pascha', where it came to specifically refer to Easter in Christian contexts.

Interestingly, in Vulgar Latin, the word 'pascua' was influenced by two sources: not only the religious term 'pascha' (Easter), but also the Latin word 'pascuum' meaning 'pasture'. This dual influence might be explained by the spring timing of Easter coinciding with the season when animals would return to pasture after winter.

In Spanish, there are several related words that share this root. For example, 'pascual' means 'paschal' or 'relating to Easter', and 'Pascuas' (plural) can refer to the Christmas season as well. The greeting '¡Felices Pascuas!' can be used for both Easter and Christmas celebrations.

English speakers might recognize this connection in words like 'paschal', as in 'paschal lamb' or 'paschal candle', which are directly related to Easter celebrations. The word 'Passover' itself, while not etymologically related, is a translation of the same Hebrew 'pesaḥ' that gave rise to 'pascua'.