The Spanish word 'plantilla' comes from the Latin word 'planta', which had two main meanings: 'sole of the foot' and 'plant'. In Spanish, this became 'planta', meaning 'plant' or 'floor plan'. The diminutive suffix '-illa' was added to 'planta' to form 'plantilla', which evolved to mean 'template' or 'insole'. You can see how both modern meanings relate to the original Latin - an insole goes under the sole of your foot, while a template is like a smaller version or pattern of a floor plan.

The simpler Spanish word 'planta' is directly related to 'plantilla'. While 'planta' primarily means 'plant' or 'floor plan', 'plantilla' took on more specialized meanings with the addition of the diminutive suffix '-illa'. This pattern of adding '-illa' to create related but more specific terms is common in Spanish.

The English word 'plant' shares the same Latin root 'planta' with the Spanish 'plantilla'. While English retained the botanical meaning of the word, Spanish developed additional meanings related to patterns and footwear. The English word 'plantation' is another related term that shows how the concept of 'plant' expanded to describe a place where plants are grown.