The Spanish word 'asa' meaning 'handle' comes directly from the Latin word 'ansa', which meant 'handle' or 'grip'. This is a straightforward evolution where the 'n' in the Latin word was dropped, resulting in the modern Spanish form. This kind of simplification of consonant clusters (ns → s) was a common sound change in the development from Latin to Spanish.

There aren't many common Spanish words that are directly related to 'asa', as it's already a fairly simple and basic word. However, you might encounter it in compound words like 'asidero' (handhold, grip) or in phrases like 'asa de la taza' (cup handle).

While English doesn't have any common words directly inherited from Latin 'ansa', you might find it helpful to know that some technical English terms like 'ansate' (having a handle or handle-shaped) and 'ansa' (a handle-like part or projection, used in scientific contexts) come from the same Latin root. However, these are quite specialized terms that you're unlikely to encounter in everyday English.