The Spanish word 'pueblito' comes from combining the word 'pueblo' (meaning 'town' or 'village') with the diminutive suffix '-ito'. The base word 'pueblo' itself derives from the Latin word 'populus', which meant 'people'. Over time, the meaning evolved from referring to the people themselves to referring to the place where people live together in a community. The addition of '-ito' makes it mean 'small town' or 'small village', adding a sense of quaintness or charm that diminutives often convey in Spanish.

The most obvious related Spanish word is 'pueblo', which is both simpler and more common. While 'pueblito' specifically refers to a small town, 'pueblo' can refer to any town or village regardless of size. Another related word is 'población' (population), which maintains a closer connection to the original Latin meaning of 'people'.

Several English words share the same Latin root 'populus'. The most direct connections are 'people' and 'population', which maintain the original meaning of the Latin word. We can also see this root in words like 'populous' (having many people), 'popular' (liked by many people), and 'public' (relating to the people as a whole). While these English words kept the meaning related to people, the Spanish 'pueblito' evolved to describe the place where people live.