The Spanish word 'puebla' meaning 'settlement' comes from the Latin word 'populus' meaning 'people'. The evolution from Latin to Spanish followed several phonetic changes: first 'populus' became the intermediate form '*poplo', which then developed into '*pueplo' through a process called diphthongization (where the 'o' sound became 'ue'). This then gave rise to the Spanish word 'pueblo', and finally 'puebla', which specifically refers to a settlement or populated place.

The most common related Spanish word is 'pueblo', meaning 'town' or 'people'. While 'puebla' specifically refers to a settlement, 'pueblo' has retained both the meaning of a physical town and its inhabitants, staying closer to the original Latin meaning of 'people'. You might also encounter 'población' (population) and 'popular' (popular), which share the same Latin root 'populus'.

Several English words are related to 'puebla' through the shared Latin ancestor 'populus'. These include 'people', 'population', 'popular', and 'public'. All these words retain some connection to the original meaning of 'people' or 'relating to people'. The English word 'pueblo' has been borrowed directly from Spanish and specifically refers to Native American settlements in the southwestern United States.