The Spanish word 'comunidad' (meaning 'community') comes from the Latin word 'communitas', which was influenced by the Ancient Greek word 'koinotes' (meaning 'community'). The Latin word 'communitas' was formed by combining several elements: the prefix 'com-' meaning 'together or with', the root 'munus' meaning 'duty or office', and the suffix '-itas' which indicates 'quality of'. So literally, it described the quality of sharing duties or responsibilities together, which evolved into the concept of a community.

Several common Spanish words share this etymology, including 'común' (common), 'comunicar' (to communicate), and 'comunitario' (community-based). All these words contain the idea of sharing or togetherness from the Latin 'com-' prefix.

Many English words are related to 'comunidad' through the same Latin roots, including 'community', 'commune', 'communicate', and 'common'. The word 'municipal' is also distantly related through the Latin 'munus' (duty, office). All these words maintain some connection to the original concept of shared duties or togetherness.