The Spanish word 'país' (meaning 'country') traces back to the Latin word 'pagus', which meant 'village' or 'district'. From this root, Latin developed the term 'pagensis', meaning 'of a district' or 'inhabitant of a district'. This word was later adopted into French as 'pays' (meaning 'country'), and finally made its way into Spanish as 'país'. This etymology shows an interesting semantic evolution from a small administrative unit (village/district) to the modern concept of an entire country.

A related Spanish word is 'paisaje' (landscape), which is derived from 'país' and refers to the visible features of an area of land. Another related term is 'paisano' (countryman or fellow citizen), which also stems from 'país' and refers to someone from the same country or region.

While English 'country' comes from a different root, English has some words that share the Latin 'pagus' ancestry. The word 'peasant' comes from the same Latin root 'pagensis' (through Old French 'païsant'), originally meaning 'person of the district/country'. The word 'pagan' also comes from 'pagus', as it originally referred to a rural person or villager (pagans were associated with rural areas where old religious practices persisted longer).