The Spanish verb 'hacer' (meaning 'to do' or 'to make') comes from Old Spanish 'fazer', which in turn derives from the Latin verb 'facere' (also meaning 'to do' or 'to make'). The evolution from Latin 'facere' to modern Spanish 'hacer' shows a common sound change in Spanish where the initial Latin 'f-' became 'h-' (which is now silent in modern Spanish pronunciation). Additionally, the internal '-c-' sound softened to '-z-' in Old Spanish before finally settling as '-c-' in modern Spanish.

Several common Spanish words are related to 'hacer', including 'hecho' (meaning 'fact' or 'done', the past participle of hacer), 'hacedor' (maker), and 'quehacer' (task, chore - literally 'what to do'). The prefix 'hac-' in these words all share the common thread of 'making' or 'doing' something.

Many English words are related to 'hacer' through the shared Latin root 'facere', including 'fact', 'factory', 'facile', 'facilitate', and 'faction'. All these words carry some connection to making or doing: a 'fact' is something that was done or made true, a 'factory' is a place where things are made, 'facile' means easily done, and to 'facilitate' means to make something easier to do.